Plex Media Server search has been worked on to make it better. Thank you so much.
Other suggestions in this forum:
I found a couple of feature suggestions about this or that not being “searchable”, but needed.
Somebody suggested metadata provider IDs (like IMDB, which I support), someone suggested, extras, somebody suggested lyrics (which is an interesting idea which I would love to disable if it becomes a feature). Other suggestions like ratings, length, resolution, chapter titles are not on my personal favorites list, but I can see the use case.
Also, role and character names have been suggested.
I would love to have “edition” and “label” metadata searchable.
Potential problems:
I can see, that not all fields can easily been made searchable without pushing low-ressource Plex Media Servers over the edge. In addition, I may get too many unwanted results if too many metadata would be “sarchable”.
Suggestion:
Therefore, I would love to have Plex offering me a smart way of configuring my search not only by source (thank you very much, again), but also by defining which data should be searchable - with a smart standard setting (like it is at the moment).
Where to put this flexible configuration setting:
Having a perfect search is different for every user (but most probably the same for ebery user across devices). I can live with a global PMS setting though.
Metadata to b searchable (open list):
- search for staff and actors
- search for titles and original titles
- search for descriptions
- search for role names and staff functionalities
- search for metadata provider IDs (like IMDB, TMDB, TVDB)
- search for edition info
- sarch for label text
- search for extra titles (hmm… “trailer” or -“trailer” would be a favorite of mine)
- search for categories
- search for file path text
- search for studio info
- search for collection text
- search for ratings, length, resolution
- search for chapter titles (like “chapter:…”)
- search for episode data (titles, description, etc - maybe with “episode:…”)
- search for season data (same as with episodes - “season: …”)
- limit search by type (movie, series, photo, music, stream, etc…)
- search for audio languages
Considerations and other expansions:
All of it being optional with only the titles being mandatory.
And allow include “+” as well as exclude “-” functionality for every search term.
UI:
I can imagine a setting page for this with three options:
□ include in main search □ include in “keyword search” □ exclude from search
Maybe you need to find a better word to describe a pre-set word to enter in sarch, followed by “:” character (like “episode:xyz” or “provider:tt012345678”). That word could be pre-set by you and shown to the user directly next to these options).
One set of option per metadata field.
This would mean a couple of more tables with links into the main search table in order to let search be still fast.
Examples:
With this, I could check if I have…
… "extended edition"s of a number of movies (set in edition metadata fields) … or…
… “extended edition +plex-meta-provider:tt012345678” of a certain movie… or …
… “extras:trailer:yes year:2021 type:movie” to find all movies with trailers from that year… (or better without trailers so I can try to add trailers to these 
And finally, follow-up feature suggestions:
Before I forget… make the result savable as smart collection and playlist 
