Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
hieu van » hieu va, thien van, lieu va
chat xuc » chat huu, cam xuc, chao xu
nang cac » nang cao, bang cac, hang cac
cac khoi » cac thoi, cac khoan, cach thoi
su sach » so sach, vu sach
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, cua triet
hieu ve » hieu va
xuc va » duc va, tuc va, luc va
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su sach) or (thuoc sach)) ky nang cac khoi. ((hieu ve) or (hieu van)) chat xuc va hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (thuoc sach)) ky nang cac khoi. ((hieu ve) OR (hieu van)) chat xuc va hanh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (thuoc sach)) ky nang cac khoi. ((hieu ve) or (hieu van)) chat xuc va hanh vi cua tre*.