Search not working

I noticed something today. The search functionality seems to depend on whether I search from a higher level folder. I used a nested folder system to organize my photos, as an example you can think of it this way:

—Photos

——National Parks

———Wyoming

So let's say I have 5 photos under "Yellowstone" named "Yellowstone Bear 1", "Yellowstone Bear 2" .... "Yellowstone Bear 5"

This is what happens when I search for the word "bear"

—Photos: all the Yellowstone Bears show up!

——National Parks: I get "Yellowstone Bear 5" and 26 bear photos from other national park folders. Yellowstone Bear 1-4 are missing from the search results.

———Wyoming: only "Yellowstone Bear 5", Yellowstone Bear 1-4 are missing

This is very perplexing to say the least!

And yes, I confirmed that Yellowstone Bear 1-5 are all in the Wyoming folder.

EDITED: I tested this with some other photos and some show up in search results from the highest level folder, but others do not.

I'm feeling very upset with Dropbox right now. I am considering moving all of my photos to a different platform (which is going to take a huge amount of time) and cancel my paid Dropbox account. What a giant pain and extremely disappointing for a service that has been around for so long.