Advanced search function for rare or magical items

Hi all,

I once asked this question before the update of this forum but again, I’m curious about how to sell or buy rare or magical items.
I got a couple of potentially valuable rare or magical items to sell or sometimes I wanna buy some too.
I’ve tried to do a couple of search but it just shows a few search results.

Have I done something wrong? Would anybody here give me some advices?

Tks