Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
chat huu » pham huu
vu chat » va chat, ve chat, du chat
va danh » va dinh, va dan, dia danh
va hanh » van hanh, va thanh, ban hanh
tu cach » tu cac
hieu vu » hieu va, hieu ve, hieu su
cua tre » cua te, cuu tre, cua triet
di cua » dai cua, doi cua, de cua
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu cach) or (thuoc sach)) ky nang x hoi. hieu vu chat huu ((va hanh) OR (va danh)) di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cach) OR (thuoc sach)) ky nang x hoi. hieu vu chat huu ((va hanh) OR (va danh)) di cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu cach) or (thuoc sach)) ky nang x hoi. hieu vu chat huu ((va hanh) OR (va danh)) di cua tre*".