The team has placed Search for the List App on the backlog. We will share an update as soon as one is available. In the meantime, you may want to try using filter as a workaround.
An error occurred while saving the commentAkshay commented
Please make this Search feature available at the earliest in coming release! Almost all the clients using Teams are requesting the same and without this feature it becomes difficult to increase user adoption to promote Teams as full fledge app to end users. Appreciate quick fix