Consult with local veterinarians and shelters to find out if there is a nursing mother cat who may be able to take on the kitten. Mother's milk is best for any baby mammal, and prior to attempting to bottle feed a kitten with supplemental formulas, it is recommended to seek out nursing cat that could take the place of the absent or unable mother.  Be aware that even if you find a cat able to nurse the young kitten, she may not accept the kitten. Always remain present when the nursing cat interacts with your kitten; there is a risk that a queen might attempt to murder a kitten that she rejects. If you are lucky enough to find a foster mother, attempt to disguise the smell of the new kitten. Try stroking the foster mother's own kittens and then stroke your own kitten. This will help transfer the smell of the mother's own litter to your newborn kitten. A queen (the cat) is more likely to reject the kitten if it smells totally unfamiliar, so by "disguising" your kitten's scent, you're increasing the chance the queen will accept her. A newborn kitten can only digest milk, and more specifically the milk from a female cat. Feeding the wrong sort of milk, such as cow's milk, can have short-term and long-term effects, including diarrhea, dehydration, nutritional deficiencies and long-term health problems due to poor growth. You can purchase kitten milk replacement formula (KMR) at your local pet food store, vet's office, and even online. Reputable brands in the United States include Cimicat and Just Born kitten milk, but you can also consult your local vet for advice on a formula that he or she recommends and that is available where you live.  Kitten milk replacement milk comes in a tub or drum and is a dry powder or liquid. You use it in much the same way you use infant formula, in that you follow the directions on the packaging which guides you as to how many scoops to use to how much water. Be aware that milk sold in cartons as "cat milk" is NOT suitable. This is cow's milk with the lactose removed and is designed...

TL;DR in Vietnamese:
Cố gắng tìm mèo mẹ đang nuôi con. Kiếm sữa. Có kế hoạch dự phòng nếu bạn chưa tìm được sữa thay thế ngay lập tức. Sắp xếp thời gian. Bạn cần biết là bạn có thể cai sữa sớm cho chú mèo con mất mẹ.