Thanks for raising this, C4 Analytics — totally see how having both AND/OR available would make the Mining Tool a lot more flexible. To make sure we’re thinking about it the right way: are you looking for the ability to group filters (for example, something like (A OR B) AND (C OR D))? If you can share one concrete set of filters you’d combine and what you’d expect to be included vs. excluded, that’d help us validate the behavior. Also, is the main intent usually to broaden results, narrow them down, or does it depend on the search?