Perhaps you should try some spelling variations:
nham thuc » nhan thuc, nam thuc, nham thu
hoc sach » hoc sinh, hoc cac, hoc anh
hanh vai » hanh vi, hanh va, hanh tai
so sach » so sanh, bo sach
co sach » bo sach, cuon sach
nang ma » tang ma, sang ma, nang cao
va nham » va cham, va tham, va nha
thuc va » thuc vat, thuc dan, thuc day
va hanh » van hanh, va thanh, va danh
vai cua » dai cua, hai cua, lai cua
cua tre » cua te, cuu tre, cua triet
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: ((((so sach) OR (co sach))) or (hoc sach)) ky nang ma hoi. lieu va nham thuc va hanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((so sach) OR (co sach))) OR (hoc sach)) ky nang ma hoi. lieu va nham thuc va hanh vai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((so sach) OR (co sach))) or (hoc sach)) ky nang ma hoi. lieu va nham thuc va hanh vai cua tre*".