Well that’s the problem then. You could say your problem has more to do with the relevancy of the results than the exact match operator (I personally don’t mind in this case since for the few times I’ve had to write python I’ve found the official docs not as useful as I’d expect).
As I said, I use that operator all the time and it works. I’d be the first to complain when it doesn’t. For instance, the - operator stopped working in YouTube a while ago, unfortunately.