Finder search *only* searches file-names (Macbook Air, El Capitan) I'm on a Macbook Air, running El Capitan (10.11.6), and I'm not very knowledgeable about computers. I have a quick question about the Finder/Spotlight search.

So, as a grad student, I have tons and tons of PDFs on my computer. A lot of times, it's helpful for me to perform a keyword search to look for references (I often forget that I've downloaded relevant files), and Finder has done a perfectly serviceable job searching through file contents and through file names up until about the last week. Suddenly, about a week ago, I realized that Finder was only indexing search results that had the keyword in the file name. 

I've tried poking around in search preferences to no avail, and I've looked for forums addressing this problem online. I have seen plenty of people who want to search file-names and can't (i.e., they can only search file contents), but I have not seen my problem anywhere.

Does anyone have any suggestions as to what might be going on here and how I could fix it? I have even tried re-indexing the search results as suggested elsewhere on StackExchange as a general tip for people with faulty Finder searches, but that didn't do anything for me.

Thanks so much for your replies in advance!
Solution:

Navigate to System Preferences>Keyboard>Shortcuts>App Shortcuts

Press the 'plus' (add) button

In Application, choose Finder

For Menu Title, enter "Find by Name…"  Do not use the "" and you must use an ellipsis (…), not three periods (...).

Enter your desired keyboard shortcut.  I use CMD-F, replacing the default behavior of regular Find.  I then repeated the process, adding a keyboard shortcut the the Finder of CMD-OPT-F for Find.