Hi!
The problem was, that simply the exact matches were still enabled, I have disabled that for you: https://i.imgur.com/xqa1MHD.png
I’ve also disabled the secondary logic, simply because you have lots of 1 word terms, and random matching may generate a huge amount of matches: https://i.imgur.com/2lj4NfP.png
You can change that, if you feel like that gives better results.
But this way, searching tags will very likely give you very similar results to the tag archives.