The Florida sheriff’s office that investigated Caylee Anthony’s death confirmed Sunday that it overlooked a computer search for suffocation methods made from the little girl’s home on the day she was last seen alive. Orange County sheriff’s Capt. Angelo Nieves said the office’s computer investigator missed a June 16, 2008, Google search for “fool-proof” suffocation methods. The agency’s admission was first reported by Orlando television station WKMG. It’s not known who performed the search. The station reported it was done on a browser primarily used by the 2-year-old’s mother, Casey Anthony, who was acquitted of the girl’s murder in 2011…