Well, I would have to say that you are assuming something NOT IN EVIDENCE.
The statements by the Head of the DRC and DAMON were that they had MORE Searchers that day. It also may be true they didn't search that exact spot, but I believe that is an ASSUMPTION the press made and spewed to everyone. Prove me wrong, I don't mind at all. It's when I learn the most.
Now, another question for you. Why if they searched that area once, were they sent back AGAIN? Who sent them back? Based on what ?
The police in DC searched the same area the Chandra Levy was found in too.