The link to the "Searching for a Campaign" topic on http://developer.constantcontact.com/ goes to the same page as the Scheduling and Sending a Campaign topic: http://community.constantcontact.com/t5/Documentation/Scheduling-and-Sending-a-Campaign/ba-p/25113
Thank you for reporting this...I also forwarded it to my website team. For both of those pages, I'm not aware that the pages ever existed (searching for a campaign and refreshing campaign results). We are looking into it on our side though.
That front page will be replaced fairly soon (in a little over a month), just as an FYI--I am still seeing if we can correct the errors though. I use this page for our documentation, so you will likely find fewer mistakes in it:
API Support Specialist