Type in a command, or "ls dictionary" to search all commands for "dictionary", etc.

man Treat!ForHalloweenTrick-orTreaters

No manual entry for Treat!ForHalloweenTrick-orTreaters.
To search for "Treat!ForHalloweenTrick-orTreaters", try typing ls Treat!ForHalloweenTrick-orTreaters.