If you're having trouble finding one or several items in a scene, you can use a Hint!

Hint:

When used, this shows you the location of one hidden object in a scene.

Triple Finder:

When used, this immediately locates and removes three hidden objects from your list. But beware, during a Soul Storm, Triple Finders will find only one item!

You can acquire more Hints and Triple Finders, in exchange for diamonds, by tapping their icons when you have none left. You can also get more via Daily Rewards, Blitz Offers, and assembling certain local mementos.