Interesting, wonder if Google's algorithm is even prepared to rank "there is no good answer" as a good result. I mean it's optimized to provide good answers, if there is no good answer perhaps the algorithm just breaks apart completely.
Also, I wonder why I'm being downvoted. Google meddling with search results is nothing new, sometimes they're even legally/politically forced to do so. Assuming we get unfiltered results is very naive.
Try an experiment, look at this this:
No results found for "cow thiophenol romanesque establishment".
The search result without the quotes seems to just be noise, any random page about cows or romanesque architecture or thiophenols.