Delete specific mass text on document

[JadeRisley]

Want I'm wanting to do probably isn't possible, but I'll give it a shot if there's a chance it could save me some time. Long story short, I have near a dozen 50 page documents of just plain text. Parts of the text are all in caps, parts in quotes and other just regular. I only want the text that are in caps and quotes, but not the other. I've tried using "find/replace" to remove many repeated sections of the text, but it's barely taken much of the chunk.

Is there a way I can ask a tool in word to identify only the all caps and quoted text and remove everything else from the document? If not, thanks anyway and I'll be doing this with the delete key one letter at a time.