if you did not have any software installed it is not possible to trace your phone. One thing that you can do is to inform local police and your service provider (mobile operator) about phone lost and as additional you can submit your phone into global lost phones database
As per information on get phone model from IMEI number
it seems that you lost a phone with below details:
M60, KKT25, KKT32, KKT26,M23
LAVA INTERNATIONAL LTD
If this information is correct it will help you with providing more detailed information to police and operator and of course lost phones database.
For the future use, you can check the anti-theft software list. Some of the listed programs are free and some of them are commercial. You can choose and test, but keep in mind to install only software suitable for your platform (Symbian, iOS, Windows Mobile, Android etc...) and check if your model is supported on their webpage.