KevinTheJedi I considered everything in quotes to be searched as exact match
anyway my question was about exclusion of some words, seems buggy or just can't master it, my agents will not succeed for sure.
Is there a way to help in this feature? enhanced search options, exact matches, exclusions, maybe non full text search mode with sql like (%word%) syntax or similar, maybe a new search page instead of a small dialog for advanced searches, connect an elasticsearch or solr search backend etc...