The YouTube pronunciation tool by Youglish.
This thing is brilliant.
It’s designed to check the pronunciation of words, but you can (and should) use it to check the way chunks are pronounced too. The only drawback is that you can’t use wildcards in the search… so although you can search for something like, “what is it with big guys and small dogs” or “what is it with men and fast cars” (see EES S4E5) you can’t search for the frame — “what is it with ___ and ___” like you can in data-driven tools like this one (coming soon).
… they also don’t seem to have indexed many new videos. Which is annoying.