It sounds like you're looking for the 2002 comedy (starring Rob Schneider and Rachel McAdams) with Serbian subtitles ("titlovi srpski").
If you already have the movie file and just need the Serbian text, you can find them on dedicated community subtitle sites. Look for the file name on: It sounds like you're looking for the 2002
The largest database for Balkan languages (Serbian, Croatian, Bosnian). It sounds like you're looking for the 2002