It resembles one of the following:
Adding +hot is a boolean search technique from early internet search engines (Google dropped + for phrases in 2011, but adult tube sites and P2P clients still use it). It forces results to include the word "hot". On sites like **XVideos 1111customs210223toriblackoiledtorigoes+hot
Conclusion
A user might be trying to locate a specific video they paid for — perhaps the seller deleted it, and they're searching for backups or re-uploads. It resembles one of the following: The "+hot"