A useful thing to know about AO3 tags is that they're wrangled by humans. A human being will read your tag, understand what it means*, and then connect that tag in the backend system to other tags that mean the same thing (if there are any)
that's why, for example, the tags
not beta read
no beta
no beta we die like men
no beta we die like mne
no beta we die like [insert character who dies in canon]
unbetad
unbeta'd
unbeta-d
un-beta'd
and a million more versions are all searchable and filterable if you just tag one of them. A Tag Wrangler (the job title of a human volunteer who manages AO3 tags) has made sure that AO3 understands that those are all synonyms, so AO3 treats them that way.
When you're tagging your fic, or searching for a fic, or filtering a tag to find or remove works from the list you do not have to use every possible version of a tag. You just need to pick one - unless using more is a stylistic choice you're making, in which case have at it.
*or research what it means - which is why wranglers really appreciate it if you put (OC) behind the name of your original characters so that they don't have to scour every source they can find to see if it's a named background character in canon.
Yes, this is real, it works, I was brave and tried it. 
my friend just told me that there's a secret second dashboard that solely contains posts from people you've turned on post notifications for, and when i click the link in the messages it opens it within the tumblr app, so the tumblr app also has a secret second dashboard for post notification blogs, and the only way to access it is to open the link for it within the app.
i literally love tumblr
Did this a second time and got better main results but the questions are weird as hell and for me, comedy should be much, much higher. Mystery science theater 3000 is my absolute favorite TV show and movie of all time. I like funny. The recommendations they gave were good, some of them were already on my TBW list.
Here are my initial recommendations: Buffy, Dresden Files, Merlin (3 great choices), Lowlifes (haven't heard of it but she looks like a vampire?), Synchronic (never heard of that one), Better Watch Out (maybe more vampires?), Cake Boss (hell yeah, I love cooking shows. If they had picked the great British baking show or Nailed It that would've been astonishingly accurate), We Got Time Today (never heard of this one either), The Real Side Chicks of Los Angeles (I would never believe this was a real show if I hadn't seen it in the list. Side chicks 🤣🤣)