Hey Tim,
Don't feel bad about not setting the search to "phrase" instead of "broad" - it's the Google default and even those of us well-versed at keyword research muck it up now and again. Keep up the effort and I'm sure it will pay off for you. Like John says, this is a numbers game.
You can't control the outcome, but if you continue to take action it seems that the outcomes generally take care of themselves!