Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
hieu cau » nhieu cau, hieu cac, hieu ca
cau pham » cau cham, cau phan, cau phap
danh lai » danh sai, gianh lai, dinh lam
tang ma » mang may, tang van
thuc va » thuc dan, thuc day
lai cua » dai cua, hai cua, lai chau
cua tre » cua te, cuu tre, cua triet
y tang » ky tang, 6 tang, 7 tang
ma hoi » mai hoi, xa hoi, ma hoa

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 y tang ma hoi. hieu cau pham ((thuc va) or (thuc vat)) danh lai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach y tang ma hoi. hieu cau pham ((thuc va) OR (thuc vat)) danh lai cua tre.
• Adding a wildcard symbol may retrieve word variants: thuoc sach y tang ma hoi. hieu cau pham ((thuc va) or (thuc vat)) danh lai cua tre*.