I don't think there is any way to correct those.
I believe that most of them are set by computer algorithms any way. They have acknowledged that some of their early attempts were less than totally successful. (Witness how many puzzles have a "passed pawn" theme.)
STATUS: UNRESOLVED/KNOWN
COMMENTS: A chess.com Moderator does not think there is a way for users to correct or modify these errors. They also indicated that there were some early automation attempts to enter themes, but that this did not work very well.
There are
and 
emojis, but it is unclear if our input on these is ever reviewed. I think the user should be able to correct any errors that they entered by mistake. There should also be a way for users to submit these specific errors to a specific person or group within Chess.com
Remove the feature if it is not being supported; does not work; or is not being updated.
ISSUE: While playing a rated puzzle, I suggested a theme via the drop-down menu labeled as "Suggest Theme". Unfortunately, I entered an incorrect Theme and would like to remove and/or correct my entry. Is there a way to do this?
I noticed that while playing other puzzles I can click on "Thumbs-up" or "Thumbs-down" to agree or agree with specific Themes, but I am unable to correct or delete suggestions that I make.
Thanks