You can perform a 'Quick Search' from any page in Asset Bank by using the search bar located in the header, or the "search within this folder" section where relevant. The search box on the home page also behaves in this way.

Asset Bank will then search for matches in both the metadata of the assets (i.e. the attribute values) and also the text of support filetypes such as Word documents and PDFs. 

If the Asset Bank has Asset Types enabled and some are quick searchable then a box of the available Asset Types will also be shown with the quick search text field, as shown in the image above.