It would be useful if there were a way to filter search results.  For example, only assets that match a keyword, or only Linux games that match a keyword.

Cooo

That's exactly how it works. You can select multiple filters at one time, such as category, platform and various tags.

Yes, you can select multiple filters, but I don't think filters can be combined with text search.  If I click "browse", I get filters, but no text search.  If I use the search box, I get text search, but no filters.  If I enable some filters first and then use the search box, the filters are not applied to the search results.

yeah that would be very useful right now, I'm looking for free web games that are all related to steamed hams, but there's no steamed hams tag to go by, so I need to rely on text search, which doesn't allow me to filter for free web games