How does search work?

Hello guys,

I am wondering if anyone understands the search system. When I try to find some music by typing in “modern” I get in the top results unrelated results, any ideas why? What I mean is the results that i get are tracks that do not include “modern” in any of the following; description, tags, name. How does one decide whether the track is modern or not, just basing on the category? for instance the tracjs that are shown on the screen are in the group “modern” but its classical music, what about other styles? why classic music?