Perhaps you should try some spelling variations:
te sach » toc sach
cam tuc » cam xuc, cam tu, nam thuc
anh tai » hanh tai, anh thai, vanh tai
cua tre » cua te, cuu tre, cua triet
hieu va » lieu va, hieu qua
hieu ve » hieu van
y nang » ky nang, ly nang, v nang
tuc va » thuc va, truc va, tuc xa
x hoi » xa hoi, o hoi, x ho

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 x hoi. ((hieu ve) OR (hieu va)) cam tuc va ((anh tai) OR (doanh tai)) cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y nang x hoi. ((hieu ve) OR (hieu va)) cam tuc va ((anh tai) or (doanh tai)) cua tre~".
• Adding a wildcard symbol may retrieve word variants: te sach y nang x hoi. ((hieu ve) OR (hieu va)) cam tuc va ((anh tai) or (doanh tai)) cua tre*.