Perhaps you should try some spelling variations:
nhieu viec » hieu viec, nhien viet
viec dan » viec dang, viec ban, viec dat
dan thuc » dan toc, am thuc
thuc cao » thuoc cao, thuc co, thuc can
te sach » toc sach
sach tu » sach thu, cach tu, sach ty
nang xa » nang x, lang xa, nang ma
tang ma » mang may, tang van
dang vi » dung vi, dang va, hang vi
cua tre » cua te, cuu tre, cua triet
vi cua » vai cua, di cua

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: te sach tu ((nang xa) or (tang ma)) hoi. nhieu viec dan thuc cao dang vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach tu ((nang xa) OR (tang ma)) hoi. nhieu viec dan thuc cao dang vi cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach tu ((nang xa) or (tang ma)) hoi. nhieu viec dan thuc cao dang vi cua tre*.