Well, Web Devs worked some magic! Pseudo mods can now be searched for! This currently is not retroactive, so items listed before this was added will not be found, though we are working on this. You'll need to restart your client to see this change when using the in-game browser.

Hey there! We're constantly looking to improve trade, for example you might have noticed our web team recently added Fractured as a modifier you can search for. Pseudo resistances are one thing we're keen to get added when we can.