I should say that Spotlight search has never worked well for me, one of the things about OSX that I've never liked. I'll regularly find that it won't match a file name that I know exists.

In fact, right now, doing some testing I reproduced can't find a file issue. In my /Users/Shared folder is a folder called Cordova and in that is a folder called Cordova.framework. Spotlight will find the Cordova folder, but not the Cordova.framework one. I have no idea why.

Not that Windows search is any better, I end up using Agent Ransack to search for files on Windows.