OK, so can you supply any query then? Any example will do.

This is just about verifying the behavior, that it's not finding a verbatim result that it should. And it has nothing to do with personalization -- it's easy to run these logged out.

Also, "A verbatim search was very similar to putting every word in quotes" is not an example of it not working. The question isn't whether they're similar -- your claim was that it "didn't work", which I take to mean it was returning incorrect results, that correct results were missing.