I'm using Windows 10. When I search for a file containing "15-47" within a folder in the file explorer, it says no results, but when I look through the folder, I see a file containing 15-47 in the filename (along with some other text -- in case it's relevant, the full file name is ONCA_15-47_ENACTED.pdf). I find that if I enter "ONCA_15-47_ENACTED" instead of "15-47", it does come up as a result. This sort of thing has happened many times in the past. Is there some way to fix this?