I'm not sure whether this is news to anyone, or if it it already posted on here, but if you are having trouble searching dead bodies, then re-bind your use key to something other than the Shift key. I have found that I have been missing rather vital aspects of the game by having 'use' bound to the shift key (i used CTRL instead).

I really dont know why this makes a difference or if im being a total donkey and missing something!!

Apologies if i am teaching any grandmothers to suck eggs here...............