If you use the field nearest the top called "Bloom Color Classification" it works--I just tried it with 'tall bearded', 'early' and 'pink' selected and got 147 results with "pink" somewhere in the description (but not all were necessarily what I would call pink).
If you use the field lower down (way down) called "Flower Color" it says no results found.
I don't know why that is, but I've learned to stay away from the lower field