You have to search through each guild card entry on your guild card list manualy, go to your list, highlight a name then slect search, once youve done that move to the next name on the list highlight search and then back again.
There is no automatic search/searcg all function unfortunatly, its always been a manual search since the begining..
Once you get the hang of manual searching you can do it quite fast.
I think the button combo for it once youve got the list up and the first name highlighted is
A A Down, A A Down when you get to the bottom of the page press the left or right trigger to move on to another page.
Where A highlights the name, the next prss of A selects search, and then it will go back to the list of guild cards, then you prss Down to move to the next guild card.
when it finds a name you will get a magnifying logo in the top centre of the screen, keep going through your list until your done, and it then select the guild card option that shows up found players.
It sounds complicated, but after a few years you will soon get used to doing a guild card search when you first come online