Perhaps you should try some spelling variations:
dang hai » dang khai, hang hai, dung hai
te sach » toc sach
hai cua » thai cua, dai cua, hoi cua
luu van » cuu van, luan van, luu hanh
luc van » luoc van, duc van, luc va
ve nhan » ve nha, de nhan, va nhan
hieu ve » hieu va, hieu van
ly nang » ky nang, ly hang, ly vang
cua tre » cua te, cuu tre, cua triet
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 nang) OR (v nang)) xa hoi. hieu ve nhan ((luc van) OR (luu van)) dang hai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((ly nang) or (v nang)) xa hoi. hieu ve nhan ((luc van) OR (luu van)) dang hai cua tre~".
• Adding a wildcard symbol may retrieve word variants: te sach ((ly nang) or (v nang)) xa hoi. hieu ve nhan ((luc van) OR (luu van)) dang hai cua tre*.