voice recognition

So I'm trying to use the Voice Recognition to navigate to an address but 95% of the time it does NOT understand the command and asks me to try again, but every time I try again I get "sorry, I did not understand your command, please try again" it happens very time and can't enter an address via...

I'm looking for a manual or "how to" on getting the voice recognition to work when using the phone system through blue tooth. It asks for "name or number" and no matter how clearly I pronounce the name it comes back with numbers. Also, if I pause for more that a second (usually to try and...