Yep, you’ve got it round the wrong way. The selector is to search within a space seperated list.. i.e.
<element attribute="text password" />
you could find using:
element[attribute~="text"]
The benefit of this is that it shouldn’t match:
<element attribute="textual password" />
To achieve what you’re actually trying to do is a bit more verbose:
input[type="text"], input[type="password"]