Use the cross icon to clear your current search. Please note the names here will usually match the ones used at so 'The Elder Scrolls V: Skyrim' will simply be called 'Skyrim'. The full scan will initiate a complete search of the locations select for matching game entries. The quick scan option will check for games installed through recognised game stores such as Steam, GOG Galaxy, Epic Games Launcher and more.
If you ever can't find a game, it's possible it was accidentally hidden.
The Games tab in Vortex consists of several easy to use components, a brief summary of the labelled features has been included below. 2.1 My game is installed but hasn't been detected.