Never try to find a domain through GoDaddy. Never use their services. Here is what they do:
You search for an empty domain. But you do not know you are competing with goDaddy directly. So one of their business areas is SELLING Domain Names. So they reserve them to sell them for a lot of money. If you search for a good name, they might have detected this right away. They also might right away register this domain for their own usage so that they can sell it to you (for a lot of money) or to others. So whatever you type in - found a cool name, it most probably will be stolen by them in a short time. So never use them. I think they are one of the worst "service" companies out there.