I doesn’t always happen of course, many queries return the exact same results, no matter which order the words are in.
But take the ‘inkoop goblin’ example which only returned one result. I started that search really wanting to look for something, so I entered ‘inkoop’. I got a lot of results and noticed the word ‘goblin’ (from White Goblin Games) in many results and wanted to narrow it down, so I added ‘goblin’ to the search bar to narrow it down.
Instead of narrowing it down, almost all relevant results disappeared, leaving just one result instead. All 20 tickets from / about White Goblin Games disappeared. The word ‘goblin’ is in the sender and also in the ticket text itself (they use it in their signature).
I also tried moving tickets around to different groups etc, tried searching in the little bar on the left entering all words, tried adding / deleting search terms via the ‘big bar’ in the center, but it doesn’t matter, the results are always the same in these cases.