Smart Mailbox Criteria

I am having trouble with my Smart mailbox. When I enter:

"Contains 'messages' that match 'any' of the following conditions:"
and then add two criteria ex:
"'Subject' 'contains' 'Update'" +
"'From' 'contains' 'Smith@nowhere.com'"

am I supposed to get all the emails that match either criteria? That's what I thought was going to happen, but it doesn't.

I want to know how to set up a Smart mailbox so it will show me emails that contain either of two criteria. Can someone tell me how to do that?

Thanks!


iMac, OSX