Strange Google Search Results

While researching for a quiz I looked up the 1970 song "In the Summertime".  According to Google it was recorded by Mango Terry.  Hey Google!  Where did you come up with that?  Don't you mean Mungo Jerry?!  Is this Google's spell check gone crazy?  Could it be the old mapmaker's ploy to catch plagiarists?  Cartographers used to add non-existent roads or villages to maps and when they appeared on other maps they would have proof of copyright infringements.

Another search also gave the 1970s duo of Seals & Dash instead of Seals & Crofts.  This one I can understand as their names are Jim Seals & Dash Crofts.  Nevertheless,  caution should be taken when using Google as a source.