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
Also, I just noticed that the same problem exists for the "Manually Refreshing Campaign Results" topic
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