You need to change the drop down menu[puu.sh] to Steam Inventory.

No i know i can search for speciic csgo dota 2 and steam items but i wanted somethinhg more aolomg the line of "search all tradingcsrds" in one go

There's no specific feature for that, however you could put in a Steam Wildcard and add 'trading cards' to the notes search.

thank you, and will there ever be the option to have a "any steam card/emoticon/background"