I'm not sure if it counts as a separate FR; it's presumably in a different frontend component - but, while the area covered by the OP's screenshot is somewhat easy for me, personally, to search with my browser's built-in tools ... the mini-picker popup that's used in various places around the site for selecting editions is especially hurting for keyboard-navigation/filtering-by-ISBN/typing/search, IMHO.

I commented on "Edition Edit Language Type Text Entry" (slightly awkward name, but seems to be exactly what I'm talking about here), but just for completeness sake, noting it on this, more-popular FR as well, incase y'all want to implement both in one pass:

The feels so necessary for classics which may have hundreds of editions in so many different languages

It would be very useful to integrate the new barcode scanner into an edition search function

Just signed up for hardcover and love pretty much everything except library management. This is one of my biggest pain points, an ISBN search in the editions section would go a long way to making adding the exact editions you have to your owned much easier.

I would also like to add searching the edition selector would be a nice to have, since currently to make sure you're past books are on the right book, the best you can do with a book with hundreds of editions is maybe filter by format and then language. Which doesn't really help too much if there are hundreds of English paperback editions

I'm reading some classics and seeing 500+ or more editions will make it unusable to find the correct one...

Also please allow filtering by language

Adding the possibility of searching for a specific isbn number here would be great. This feature would especially help readers of languages different than English.