I am attempting to search for issues that do NOT have certain words. How can I do that?

[Judith L Boucher]

I am searching for record type = bug, who do NOT have 'Approved by FMO' in the text. 

However, when I use '!~' I receive an error that: The operator '!~' is not supported by the 'text' field."

What can I use instead?

[Jack Brickey]

it can't be used w/ "text" but can be used w/ a specific field, e.g.

Summary !~ "repair"

[Judith L Boucher]

Okay, thank you.  That is unfortunately what I thought.