Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
nang cac » nang cao, bang cac, hang cac
cac khoi » cac thoi, cac khoan, cach thoi
cham xuc » cam xuc, chat xuc, cham soc
cua tre » cua te, cuu tre, cua triet
danh vi » hanh vi, dinh vi, danh di
hieu va » hieu qua
va danh » va dinh, va dan, va hanh
vi cua » vai cua, di cua
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: ((tu cac) or (thu sach)) ky nang cac khoi. ((hieu va) OR (lieu va)) cham xuc va danh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cac) OR (thu sach)) ky nang cac khoi. ((hieu va) OR (lieu va)) cham xuc va danh vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu cac) or (thu sach)) ky nang cac khoi. ((hieu va) OR (lieu va)) cham xuc va danh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: ((tu cac) or (thu sach)) ky nang cac khoi. ((hieu va) OR (lieu va)) cham xuc va danh vi cua tre*.