Hi ca'c ba'c Co' ba'c na`o co`n nho+' lo+`i ca cu?a ba`i " Quo^'c te^' ca " kho^ng ? Ne^'u co' la`m o+n post giu`m. Co' pha?i ba`i na`y la` dde^? ky~ nie^.m nga`y lao ddo^.ng quo^'c te^' 1/5 kho^ng? Regards;