Perhaps you should try some spelling variations:
dung hai » dung tai, dung ha, dung sai
van dung » van dong, xay dung, tin dung
nhan luc » nang luc
te sach » toc sach
hieu va » lieu va, hieu qua
hai cua » thai cua, dai cua, hoi cua
luc van » luoc van, luu van, duc van
cua tre » cua te, cuu tre, cua triet
hieu ve » hieu van
ly hang » ly quang
v nang » va nang, vu nang, van nang

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 ((ly hang) OR (v nang)) xa hoi. ((hieu ve) OR (hieu va)) nhan luc van dung hai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((ly hang) or (v nang)) xa hoi. ((hieu ve) OR (hieu va)) nhan luc van dung hai cua tre~".
• Adding a wildcard symbol may retrieve word variants: te sach ((ly hang) or (v nang)) xa hoi. ((hieu ve) OR (hieu va)) nhan luc van dung hai cua tre*.