Actually, I slightly changed the syntax to be simpler:

* "cool stuff" will only match if both 'cool' and 'stuff' are present

* "cool, stuff" will match if either 'cool' or 'stuff' is present

* "cool stuff, pizza" will either match both 'cool' and 'stuff' or 'pizza'

Vertical line is also supported: "cool stuff | pizza".

It does work, just pay attention to syntax:

* "cool, stuff" will only match if both 'cool' and 'stuff' are present

* "cool | stuff" will match if either 'cool' or 'stuff' is present

* "cool, stuff | pizza" will either match both 'cool' and 'stuff' or 'pizza'