Find with include some exclude some

I feel as though I should know how to do this but find myself at a loss.
What is the best way to add a negative to a find?
eg I want to find all files or folders with names including "sign" but not "design".
Surely it is easy? :smile:

..seems to work in the regex tester but no the advance find window of DOUS?

OK got it....
Advanced Find....
Name - - match - - sign - - use regular expression
Name - - no match - - design - - use regular expression
Got to luv it when a plan comes together!