I am not sure this is the right place to track the issues I run into, but I will continue to do so.
I searched Immenstaad leitungswasser (the name of a town + “drinking water”). I got this:

The first search result is relevant. The second one is for an entirely different town. Now if my search term Immenstaad had not existed, I might accept this, but Immenstaad does exist so auto-correcting away from what I explicitly entered is annoying. The third search result, the Listings, entirely ignore the second search term (half of what I entered!).
So once again I had to enforce my actual search term by enclosing it in quotation marks, so "immenstaad" leitungswasser. I got this:

And again: first search result useful, second and third completely ignoring my second search term; the second search result is the English wikipedia so it cannot possibly contain my German search term. Only the fourth result is related to water again.