What Photoshop version are you using?
If you have the latest version CC, it has an extremely useful search feature now. Even as an experience user, there are times I find it useful. Note mine is showing unavailable as I happened to have an adjustment layer selected.
You can open the search window from the top right corner
[EDIT] Just a thought, but I wonder if it doesn't show if you don't have Show all filter groups and names checked in Preferences?