Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
danh lai » danh sai, gianh lai, dinh lam
hieu cau » nhieu cau, hieu cac, hieu ca
cau pham » cau cham, cau phan, cau phap
cua tre » cuu tre, cua triet, dua tren
thuc va » thuc dan, thuc day
sach ky » sac ky, sach y, sach ty
tang ma » mang may, tang van
ky tang » ky nang, ky dang, kho tang
ma hoi » mai hoi, xa hoi, ma hoa
cua te » cua tu

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 hoi. hieu cau pham ((thuc va) or (thuc vat)) danh lai ((cua tre) OR (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach ky tang ma hoi. hieu cau pham ((thuc va) OR (thuc vat)) danh lai ((cua tre) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc sach ky tang ma hoi. hieu cau pham ((thuc va) or (thuc vat)) danh lai ((cua tre) OR (cua te))".
• Adding a wildcard symbol may retrieve word variants: thuoc sach ky tang ma hoi. hieu cau pham ((thuc va) or (thuc vat)) danh lai ((cua tre) OR (cua te))*.