But it doesn't work with Russian or Ukrainian that well. A few reasons: 1. Slavic languages have heavy inflection. If Google doesn't understand all the possibl

But it doesn't work with Russian or Ukrainian that well. A few reasons: 1. Slavic languages have heavy inflection. If Google doesn't understand all the possible forms of a word, it will give you poor results until you search again by changing your query slightly. 2. Google doesn't understand common synonyms, so it doesn't give results that contain synonyms. 3. Russian websites may not care about google rank as much as Yandex, so they might not even be indexed. I don't know how, but there are thousands of websites I can find by searching Yandex for a certain thing that will not be on Google. It may be those three things combined, or other factors I didn't think of.