Multiple words in any order using regex [duplicate]

Answer 1

I assume (always dangerous) that you want to find whole words, so "test" would match but "testy" would not. Thus the pattern must search for word boundaries, so I use the "\b" word boundary pattern.

/(?i)(\btest\b.*\blong\b|\blong\b.*\btest\b)/

Answer 2

I don't think that you can do it with a single regex. You'll need to d a logical AND of two - one searching for each word.