The Dash is meant to be a quick way of opening files, just start typing
in the name of the file and relevant files / folders with that name
will be shown. When the file you want is visible, click on it to open
and if it's a document then the path will be shown in the top bar.
Music and video files will launch in their respective programs but in
there you'll be able to find the location of the file playing.

Is that any help or are you wanting just just find where stuff is
without opening ?