It's happening more and more often that the first result doesn't even include all the words in my fairly short queries.

I'm thankful they have a warning on the result so that I don't waste my time.

They're also extremely liberal with synonyms. For example, yesterday I searched for "linear cohort survival model." The first result has bolded "general linear transformation model." I can't even tell what "general" and "transformational" are mapping to in my query.