Perhaps you should try some spelling variations:
thanh hai » thanh phan, thanh hoa, thanh san
toc sach » hoc sach, doc sach, thuoc sach
nhan luc » nang luc
hai cua » thai cua, dai cua, hoi cua
luc gia » luoc gia, duc gia, quoc gia
ve nhan » ve nha, de nhan, va nhan
hieu ve » hieu va, hieu van
cua tre » cua te, cuu tre, cua triet
v nang » va nang, vu nang, van nang
y nang » ky nang, ly nang, may 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) OR (toc sach)) ((y nang) OR (v nang)) xa hoi. hieu ve nhan luc gia thanh hai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) OR (toc sach)) ((y nang) or (v nang)) xa hoi. hieu ve nhan luc gia thanh hai cua tre~".
• Adding a wildcard symbol may retrieve word variants: ((te sach) OR (toc sach)) ((y nang) or (v nang)) xa hoi. hieu ve nhan luc gia thanh hai cua tre*.