Are you using a proxy or onion routing?
I know that when I use either of these I will get 'google' in all sorts of different languages.
Are you getting any pop ups or other strange happenings?
You may want to look at the chance that you may have a browser hijack problem.
If you think that this may be the case and
download this install it to your desktop, follow the scan instructions and post the results here.
Failing that I would search the web for similar types of problems and find out what others did to correct it.