Perhaps 'Off The Grid' from late 2011? From an online recap:
Armed with only very basic information about the two contestants, a team of surveillance experts led by human tracking expert Kevin Reeve, is tasked with learning enough about the contestants to find where they might be and then to go out and actually bring them in.
However, this was on the History Channel and I think it was a one-off. You can see the trailer on Youtube, as well as the entire episode.
[Other vague possibilities: NatGeo's The Great American Manhunt (AKA Mystery Manhunt), but that's about a team of experts locating someone using forensic clues; and there's Discovery's Mantracker, but there's mainly one tracker there.]