Perhaps you should try some spelling variations:
te sach » toc sach
hieu va » lieu va, hieu qua
dinh vi » dinh ve, dinh viet, dinh tri
va dinh » van dinh, va kinh, va tinh
cau luc » cau truc, cau phuc
cua tre » cua te, cuu tre, cua triet
hieu ve » hieu van
nang xa » nang x, lang xa, nang ma
luc va » duc va, tuc va, loc va
vi cua » vai cua, di cua

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (te bao)) ky nang xa hoi. ((hieu ve) OR (hieu va)) cau luc va dinh vi cua tre~.
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (te bao)) ky nang xa hoi. ((hieu ve) or (hieu va)) cau luc va dinh vi cua tre*.