For future FOPNU I wondered if there is a way to retrieve past searches for content.  I might have a search several days ago unsuccessful but hadn't thought to do it again.  Perhaps a key under the Search tab?

...this reminds me of the 'wish list' function of soulseek.

Wish list is a good way to view it.  Something like right click on the search button to see what has been looked up and ability to remove older items.