Perhaps you should try some spelling variations:
thanh hai » thanh phan, thanh hoa, thanh san
van nang » van quang, van ban, van dong
hai cua » thai cua, dai cua, hoi cua
te sach » toc sach
hieu ve » hieu va, hieu van
ve nhan » ve nha, de nhan, va nhan
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
luc va » duc va, loc va
tuc va » thuc va, truc va, tuc xa

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