Keyword settings

Hi there, I own a Scrivener 2 copy and I use it for almost everything. I was wondering if there was a way to change the setting of keywords.

In a project I’m working on, I have this nested keyword list:

Parent: Desert,
Children: Desert I, Desert II, Desert III.

When I search for “Desert III” nothing goes wrong: all the pages tagged with that keyword and that keyword alone, show up in my binder. However, when I search for the keyword “Desert”, even pages that I have not tagged with said keyword appear in my research results. These are pages tagged with any of “Desert” children keywords ( so the keywords Desert I, Desert II, or Desert III).

I have made some test, and I’m pretty sure that if you have two keywords, let’s say “randomword” and “randomword 2” and you tag a page with only the second keyword ( randomword 2), a search for “randomword 2” will always also show the pages tagged with “randomword” as well. Even if you didn’t tag them with that at all.

Is there any way to make it so that searching for a keyword exclusively shows that exact keyword, so case sensitive and space sensitive?