Perhaps you should try some spelling variations:
cham xuc » cam xuc, chat xuc, cham soc
van hanh » van thanh, ban hanh, van anh
sach ky » sac ky, sach y, sach ty
dau cua » dai cua, day cua, cau cua
te sach » toc sach
hieu va » lieu va, hieu qua
hieu vu » hieu ve, hieu su, dieu vu
cao hoi » cau hoi, co hoi, cao hoc
cua tre » cua te, cuu tre, cua triet
va dan » ca dan, va dao, va dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky nang cao hoi. ((hieu vu) OR (hieu va)) cham xuc ((van hanh) or (va dan)) dau cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang cao hoi. ((hieu vu) OR (hieu va)) cham xuc ((van hanh) OR (va dan)) dau cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang cao hoi. ((hieu vu) OR (hieu va)) cham xuc ((van hanh) or (va dan)) dau cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang cao hoi. ((hieu vu) OR (hieu va)) cham xuc ((van hanh) or (va dan)) dau cua tre*.