Perhaps you should try some spelling variations:
te sach » toc sach
hieu va » lieu va, hieu qua
thuc va » thuc vat, thuc dan, thuc day
sach vu » sach va, sach tu, sach uu
nang xa » nang x, lang xa, nang ma
hieu ve » hieu van
vu nang » vuc nang, va nang, vu dang
cua tre » cua te, cuu tre, cua triet
xuc va » duc va, tuc va, luc va
vi cua » vai cua, di cua

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 vu nang xa hoi. ((hieu ve) OR (hieu va)) chat ((xuc va) OR (thuc va)) hanh vi cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach vu nang xa hoi. ((hieu ve) OR (hieu va)) chat ((xuc va) or (thuc va)) hanh vi cua tre~".
• Adding a wildcard symbol may retrieve word variants: te sach vu nang xa hoi. ((hieu ve) OR (hieu va)) chat ((xuc va) or (thuc va)) hanh vi cua tre*.