Printing in booklet mode only prints odd pages

when the down load opens up on the screen, in a small tool bar at the top of the pdf section there are areas that show page numbers , zoom in / out expand size etc the number of pages will be there shown as 1 /24, or 50,or 600 etc ( 1 / of the number of pages in the down load )
if you click on the scroll bar on the right of the page proper and scroll down , as you pass each page break it shows the next page number
if you scroll down the page you will come to a contents list and that will also show the number of sections in the manual and that will indicate how many pages you can expect
to reduce paper wastage from a normal house hold printer when you print from the printer logo in the bottom right of the page you get the printer up and where it says print all , change that to print odd pages ( or even pages ) or or print pages and this is where you put in the pages that you want printed -such as 1,3 5, 7 etc
when the print run is finished put the whole lot of printed pages turned around and back in the printer then print the page numbers that you missed on the first print run this will result in a booklet with printing on both sides of the page and reduce the number of sheets used in printing

The paper you have inserted into the printer, and your page size settings have to match. You can't load A4 paper and tell it to print A5 size. This is why it is printing so small on the A4 paper. It assumes you need to trim it down to A5 size after printing.

Dupoles printing can mean different options in different hardware and software. It can refer to two pges condensed to one A4 in landscape or it can mean odd and even pages on two sides.
Most office suite packags give you the option of duplex in the same way leaving the hardware unchanged which is the best option oveall.

You can printy all ODD pages then reinsert and have it print even pages on the other side and then all you do is colklate them. OR you can print side by side fromn 1- whatever.

By using software option it leaves the printer in its native mode without having to reset ity for the next job

Please rate my help++++Thanks for using FIXYA

Maybe try printing the odd pages then flip and print the even pages instead of trying to make use of the duplexing feature. Also upgrade to the latest version of open office.

http://www.brother-usa.com/ModelDocuments/Consumer/Software%20Users%20Manual/SUM_DCP_7030_7040_MFC_7340_7345N_7440N_7840W_EN_1650.PDF

here is the manual p4 and p16 discuss the topic:
Duplex printing 1
The supplied printer driver supports duplex printing.
Guidelines for printing on both sides of the paper 1
�� If the paper is thin, it may wrinkle.
�� If paper is curled, turn over the stack, straighten it and then put it back in the paper tray or the Manual Feed
Slot.
�� If the paper is not feeding properly, it may be curled. Remove the paper, straighten it and turn over the
stack.
�� When you use the manual duplex function, it is possible that there may be paper jams or poor print quality.
If there is a paper jam, see Paper jams in the User’s Guide. If you have a print quality problem, see
Improving the print quality in the User’s Guide.
Manual duplex printing 1
The machine prints all the even-numbered pages on one side of the paper first. Then, the Windows® driver
instructs you (with a pop-up message) to reinsert the paper. Before reinserting the paper, straighten it well,
or you may get a paper jam. Very thin or thick paper is not recommended.
Simultaneous scanning, printing and faxing 1
Your machine can print from your computer while sending or receiving a fax in memory, or while scanning a
document into the computer. Fax sending will not be stopped during PC printing. However, when the machine
is copying or receiving a fax on paper, it pauses the PC printing operation, and then continues printing when
copying or fax receiving has finished.


�� Manual Duplex
Check Manual Duplex. In this mode, the machine prints all the even numbered pages first. Then the
printer driver stops and shows the instructions required to re-install the paper. When you click OK the odd
numbered pages are printed. There are six types of manual duplex binding directions available for each
orientation.
�� Booklet Printing
When you want to print a booklet, use this function. To make the booklet, fold the printed pages down the
middle.
�� Binding Offset
If you check the Binding Offset option, you can also specify the offset for binding in inches or millimeters

there's the function PRINT BOOKLET under the file menu

In this printer u dont have duplex print mode,u can use only manully.

here's how:

print double sided pages

1. Set your computer software for double sided printing if you have a printer that is compatible. Double sided printers are generally professional style machines, and most offices, schools and libraries will have them. On a PC, go to the drop down "File" menu and select "Double Sided Printing" under the "Preferences" or "Properties" window and print. If you have a MAC, click "Copies and Pages" under the "File" menu, select "Layout" and then click on "Long-Edged Binding" and print.
2.Print double sided with your standard home printer, again, by setting your PC writing software. When you are ready to print, click on the drop down "File" menu and select "Print." From the "Print" window select "odd pages only," or "even pages only."
3.Set your odd and even pages a bit differently if you are working with MAC writing software. Select "Print" from the drop down "File" menu and click on the arrow to drop the "Copies & Pages" menu. Under the "Copies & Pages" menu, select "Paper Handling" and then click on "Odd Numbered Pages" or "Even Numbered Pages."
4.Select "Odd Pages Only" or "Odd Numbered Pages" and then print as usual. It is a good idea to mark the top of your first page with a pencil so that you know the direction and side of the page your printer prints. Use the mark to determine how to turn your pages and place them back in the printer. Select "Even Pages Only" or "Even Numbered Pages" and print again. $('.Article .Steps .Image').each(function(i,e){ e = $(e); e.find('img').error(function(){ $(this).unbind(); e.remove(); }); });

OK, same problem, I've gotten through the solution. I can print and have the first page and last page on one side of the large sheet and the two inside pages on the other side, so that is foldable into a booklet.
I start with a 4 page (US letter sized) document I wish to print as a booklet on tabloid paper.
In the (page layout or editing program's) print dialogue, I've said print all pages, set it at 1 page per sheet, then clicked the printer properties button to open the Xerox Workcenter 7345PS option dialogue.
In the Xerox dialog on the "Paper/Output" tab, selected the larger (Tabloid, 11x17" in my case) paper size, selected 2-Sided Print. Then I select the "Layout/Watermark" tab and clicked the Booklet Layout radio button, chose "Landscape" for the Page Layout Option. Note: I saved these settings as "Tabloid Booklet" by clicking the down-arrow to the right of "Driver Defaults" so that I could select them and not have to dial in every one of the settings whilst experimenting.

Usually if you see the page in the Publisher window is already landscape, it will go landscape in the Printpreview and also in the print out. I just try to imagine what is your problem.
If I am not mistaken, this is what you did:
You have two "small" pages (maybe A5??) and you want to print it in one page of A4. Of course the A4 should be landscape.
Publisher does not have the facility to set 2 pages A5 in one A4 like in Microsoft Word.
The easiest way is just create a new page with A4, then copy the 2 pages (or you called it flyers) and paste it in that A4 landscape page.
Publisher can do print 2 pages A5 in one sheet A4 but the arrangement is as booklet. You can see the choices in File --> Page Setup --> tab "Layout" --> scroll the Publication type.
I do print 2 pages A5 in one sheet with many variations using addition software named "Clickbook".
Let me know if I m wrong in interpret your problem.