Searching with these terms on SO:
user:939860 type unknown
This answer of mine is not found (
user:939860 being me):
But it clearly has both words in it.
I tried variations including tags, leaving away the user or
is:answer etc., no dice.
It seems to be because
unknown is formatted as code in the answer as has been pointed out in a comment by @Shadow Wizard. Hence, this search finds the post as desired.
Such words may or may not be formatted "correctly" across the site. Identifiers and such are mostly for better readability and that does not seem to be handled consistently across the site. It's also very hard to establish the bounds where to format as code and where not.
This makes searching a pain. Can we include minor code snippets for general search terms? Or is there a better solution?