Thanks for posting this @austinjaney! I have added a +1 for this on our internal roadmap.
The behaviour we are thinking of adding, is allowing you to separate different search terms with a comma, such as “Powershell, Exchange” and this will look for cards which have both “Powershell” and “Exchange” keywords without having to be necessarily one after another. We will most likely add this once our new WYSIWYG editor is out!