Dont know exactly, but will test it when the server is on.
Server is online and ready again
Please be patient
, i will take a look on the features for lexicon.
Edit: After Testing:
You could add a space before and after the term in acp (second field) for searching a single, whole term OR you could use it normal (term in second field without leading space) for searching into words containing the term and term single also.
If you want it for 2 or more terms you have to make corresponding entries for that (also with identical description). It´s not planned to add this feature your ask for, but if someone will try to make it, i will add it