If LW's not connected properly, you won't see many (if any) search results.

Look here to start with. Make sure you're only using 1 software firewall & that it's configured to allow LW. If your modem/router has an internal firewall, this could be part of the problem...read the info about UPnP & port forwarding.
Connection problems? Check here first!

If you're stuck, give some system details.
System details - help us to help you