..Minh mong co 1 AD nao co the cho minh chien cung site..vi minh cung chi biet chut it..hieu nhung no rat phuc tap... ti le lam va hieu qua k cao nhu minh mong muon.. minh co tung lam site ptp.nhung ma cung theo ma k lam noi..thoi gian rat nhieu ma k biet cach lam.. buon cang buon hon theo...