The asset search options are the same as found in the asset manager.
(A) Type to word search file names and asset descriptions. An auto suggest list will appear, select an individual asset if you see what you are looking for
(B) Refine your search by asset type - image, document, video, audio
(C) Refine your search by file extension - jpg, png, pdf, etc
(D) Refine your search by which CMS user uploaded it
(E) Set the order in which to display found assets.
After making any of the choices A - E click the submit button (F) to see the results.