you know what. I kind of realized "yuri" and "incest" are very common, and I think for those kind of cases exceptions can be made. But at the same time, if you're specifically looking for a yuri setting, I think using "females only" instead of "yuri" makes more sense. And in that case the "females only" tag is half as common as "yuri" and the results for ["females only" "incest"] are only 1/3 of ["yuri" "incest"]

I agree with previous comment. We don't need a specific tag for such simple combinations, I know not every ["yuri" "incest"] contains "yuri incest", but it often

You can just search for yuri + incest no?