I was looking for “term1_term2” (tried with and without quotes) where the underscore was required, and it seems the search considered it a space and used fuzzy matching.
Also there seems to be a wording issue in the help under Operators. The last Boolean bullet says:
"term1": Contains the string term1, in exactly this form; uses fuzzy matching (e.g. "DEVON tech" matches also "DEVON-tech" or "DEVON++++tech"); accepts also the '*' operator, like 'BEFORE' but more precise.
```To me, when I read "exactly this form" I focus on the word "exactly", which doesn't leave room for fuzz.
I eventually found the information I needed so now it is not important, but is there a truly exact, no-fuzz-allowed, method?