Most users are idiots, so the behavior makes sense.

If some random teenager googles: “Am I preganante?” then the search result should guess “pregnant” instead and those kind of users will be happy.

It only gets annoying when you search for highly specific things, but I’ve found if you put it in quotation marks it usually works out.

My biggest issue isn’t the search, but the dozens of generated spam sites that nowadays crowd the first search result page :-/