Google is a "jack-of-all-trades, master of none" translator. Which means that it is actually one of the worst translators. For each language there is a different 'best' translator, usually dedicated to only that language.

The trick is to find which one works best for your language. What I usually do is to type "translate <words> from <language> to English" in DuckDuckGo and among the first few suggestions there's always a site with a good translation.