Let's say I have a file in my course called "Understanding and Using the IAT.pdf". I should be able to search for "understanding the IAT" in the Files and see this file as a result. Right now, the search isn't this flexible: it looks for an exact match for the search, rather than searching for each word in the search. So "using the IAT" would pull up the file, but not "understanding the IAT."
Searching word-by-word would make it easier to find a file that you're not sure the name of, especially in courses with lots of files.