Two defendants facing sex abuse charges who failed to appear in Forsyth County Superior Court last month remain on the lam.Authorities are also still searching for a local man who disappeared in February 2009, midway through his own trial on child molestation and other charges.Their disappearances highlight the difficulties that agencies can have keeping tabs on suspects who are out on bond.And though two defendants accused of crimes against children failed to appear in court last month, Forsyth County District Attorney Penny Penn said she doesn’t see a pattern. “There are more defendants that I’m surprised, based on what the facts (of their cases) are, that they do show up,” Penn said. “I’m surprised that this does not happen more.