Changing the zoom level will typically show these missing results. For example, I just checked my neighborhood. There are 5 restaurants within a few hundred feet of each other rated 4.5+ stars. With my filters set to 4.5+ stars, when I zoom out a bit, 4 of the 5 restaurants disappear, and I instead see a handful of 4.1 and 4.3 star restaurants. One of the 4.3 star restaurants is literally next door to a 5 star and 4.5 star restaurant, which are hidden at that zoom level.

I thought maybe it's some kind of weighted rating, because it's showing me the 4.3 star restaurant with 1,100 reviews, instead of the 4.5 star restaurant with 600 reviews. So, perhaps Google thinks the additional number of reviews make up for the lower rating, and they rank it higher, even though I'm specifically asking to not see those results. However, it also shows a 4.4 star restaurant with 40 reviews, while hiding a 4.5 star restaurant with 90 reviews.

This is par for the course when it comes to modern recommendations though. Do you want to see Netflix movies released in the past 3 years? Or what about a simple list of top rated movies? Too bad, you can watch what we tell you to watch. It's a complete lack of respect for the user.