Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
pham thuc » phap thuc, pham chuc, pham thu
nham thuc » nhan thuc, nam thuc, nham thu
dinh dai » dinh dat, sinh dai, dinh dao
nang ma » tang ma, sang ma, nang cao
va dinh » van dinh, va kinh, va tinh
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
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 nang ma hoi. lieu va ((pham thuc) or (nham thuc)) va dinh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach y nang ma hoi. lieu va ((pham thuc) OR (nham thuc)) va dinh dai cua tre.
• Adding a wildcard symbol may retrieve word variants: thuoc sach y nang ma hoi. lieu va ((pham thuc) or (nham thuc)) va dinh dai cua tre*.