Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
toc sach » hoc sach, doc sach, nuoc sach
danh vai » danh sai, danh va, doanh van
hieu van » hieu va, thien van, lieu va
vai cua » dai cua, hai cua, lai cua
va danh » va dinh, va dan, va hanh
van cam » van nam, van lam, van cau
cua tre » cua te, cuu tre, cua triet
ma hoi » mai hoi, xa hoi, me hoi
xuc va » duc va, tuc va, luc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((toc sach) OR (thuoc sach)) ky nang ((ma hoi) or (ma hoa)). hieu van cam xuc va danh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc sach) OR (thuoc sach)) ky nang ((ma hoi) OR (ma hoa)). hieu van cam xuc va danh vai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((toc sach) OR (thuoc sach)) ky nang ((ma hoi) or (ma hoa)). hieu van cam xuc va danh vai cua tre*".