So Blah* ONEAR (5) Blarg* could score a hit with "Blahsenstein the quick brown fox Blargenwurfers"
Also, it's redundant to make ONEAR (4...2) ... ONEAR(5) means return any matches to Keyword 1 that occur afterwards and within (5) five words.
So 1) "Blahsenstein Blargenwurfers" or any progressively larger set up to ""Blahsenstein the quick brown fox Blargenwurfers" would match.
Also 2) if "Blargenwurfers" came first... there would be no match - ONEAR is set off by the first term, then it looks for the second.
Email? SharePoint or OneDrive files? Just note that can also make a difference in some cases (no pun intended).