There are other similar plugins such as Search_Code and Code_Search which should also be switched over to use word triggers because they are considerably faster and less taxing on the backend.
Also, we should add a little logic to make sure the trigger word isn't the entire query. This would also be made easier if we use trigger words.
A nice solution for creating the trigger words would be to slurp a text file and create a word trigger from each line, similar to the airlines plugin. It would at least look a littler nice than having a massively wide/tall list of words.
Also, it should be able to trigger on the word "Zanran".