Are you sure those abbreviations are right? For AGD, maybe its suppose to be ATG (Against the Gods)? Or maybe TDG (Tales of Demons and Gods)? As for DTG, maybe you mean DTH (Devour the Heavens)? Where did you find it mentioned? Some context could help.
AGD: After God Dies (The Movie Never Made) DTG: Down To Gorilla (The Worlds Newest Awkward Way of Hookups)
did you find ADG on the ATG main page on wuxiaworld? I found it mentioned in the comment below: "Hello! just fisnished reading all chapters that are on (152) and i must say its probablly the best novel i have read soo far. There comes my question. Do you know any novels simmilar to AGD? I prefere mature novels with some violence etc. And the main character is just sooooo epic. Also BIG thanks to translators for their great job" I think it was probably a typo in this case.