/images/1041385860215607387/1224693177886445630/dien-nao-phu-than-quyen-2-chuong-198-banh-quoc-sam-tinh-toan.txt?ex=661e6b67&is=660bf667&hm=48d990e5668cc32ea62ef8a9dfd22415537cae9565ff749f9b994fca23503bd9&