Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
gianh lai » gian lan
pham thuc » phap thuc, pham chuc, nham thuc
hieu cau » nhieu cau, hieu cac, hieu ca
va gianh » va gian, van giang, va giai
cau pham » cau cham, cau phan, cau phap
tang van » dang van, hoang van, trong van
sach ky » sac ky, sach y, sach ty
thuc va » thuc vat, thuc dan, thuc day
tang ma » mang may
lai cua » dai cua, hai cua, lai chau
cua tre » cua te, cuu tre, cua triet

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: thuoc sach ky ((tang ma) or (tang van)) hoi. hieu cau pham thuc va gianh lai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach ky ((tang ma) OR (tang van)) hoi. hieu cau pham thuc va gianh lai cua tre.
• Adding a wildcard symbol may retrieve word variants: thuoc sach ky ((tang ma) or (tang van)) hoi. hieu cau pham thuc va gianh lai cua tre*.