To find a word, hit either Control-f (Windows) or Command-f (Mac) to bring up the Acrobat Find window...
In the example above, you are searching for MWR, (abbreviation for Most Wanted Response). Since you are looking for exactly MWR, you click “Match Whole Word Only” -- if you wanted to catch any word with MWR in it (ex., MWRs), you would not click this box. Because MWR is abbreviated with capital letters, you ask it to “Match Case.” If you’d like to find the next occurrence of MWR, just hit either Control-g (Windows) or Command-g (Mac).