The game lists the chance that of getting a decoration from a 5 star box as 1:10.

I type in zzz to clear all the circles on my iPad. Unfortunately, that also clears the item list. It helps me to get a look at the scene as a whole, though.
Try this: Read the list of items, then type zzz. Zoom in to the left half then right and see which items you find. Now clear the zzz and zoom over the scene again. Do the circles line up with all you found? Click any unexpected ones to find out what is there? Now, do a alphabetical scene hunt down the item list. Hopefully you can find most without needing to click the word. Can repeat process as needed.
I also find it helpful to restudy after I get the second clue, as I usually have forgotten a few items that haven’t shown up yet.
Hope this helps!

Here’s some more.