Perhaps you should try some spelling variations:
te sach » toc sach
hieu va » hieu qua
cam luc » cam xuc, cau luc
luc van » luoc van, luu van, duc van
minh vi » minh voi, minh va, minh ve
dinh vi » dinh ve, dinh viet, dinh tri
cua tre » cua te, cuu tre, cua triet
sach v » sach va, sach y, sach 2
v nang » va nang, vu nang, van nang
x hoi » xa hoi, o hoi, x ho

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 v nang x hoi. ((hieu va) or (lieu va)) cam luc van ((minh vi) or (dinh vi)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach v nang x hoi. ((hieu va) OR (lieu va)) cam luc van ((minh vi) OR (dinh vi)) cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach v nang x hoi. ((hieu va) or (lieu va)) cam luc van ((minh vi) or (dinh vi)) cua tre*.