The omission of diacritics will change your search results. Try searching for "Copic" vs. "Ćopič" to get an idea of what diacritics can do for a search.
Serbian is a South Slavic language spoken mainly in Serbia, Bosnia and Herzegovina, Montenegro, Croatia,
and Macedonia by about 9-10 million people. It is official in Serbia, and is the principal language of the Serbs.
Wondering if your favorite English language novel has ever been translated? Index Translationum is one of the best sources for such information. You can search any number of fields - just author, title word, country of publication, translator, etc. You just need to specify the original language of publication and the language you are seeking to get a list of any and all translations. This was originally a printed publication and can be very helpful if you want to know if something was ever translated. The site, like its published version, is sponsored by UNESCO.