Searching for shortcuts in the Customize Shortcuts window will return things that don’t make sense.
Since this is sorted by Name by default, I only expect this to return entries with names that start with the search term. Presumably it’s looking for the search term as a substring under any column, but this is only the desired behavior for the Description field.
Furthermore, if you search for a hotkey and then attempt to re-sort the list by a column the results really don’t make sense. Nonsensical items show up as the only result when you change the column sort with a specific enough search term.