Perhaps you should try some spelling variations:
thien van » thi van
hieu van » hieu va, lieu va, hieu ve
nam thuc » nam thuoc, am thuc, nam thu
va doanh » van doanh, vay doanh, va danh
doanh va » doan va, doanh tai, doanh cua
te sach » toc sach
dang xa » dang xay, lang xa, dang ha
thuc va » thuc vat, thuc dan, thuc day
cua tre » cua te, cuu tre, cua triet
va cua » va chua, via cua, ca 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 _ dang xa hoi. ((hieu van) or (thien van)) nam thuc va doanh va cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach _ dang xa hoi. ((hieu van) OR (thien van)) nam thuc va doanh va cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach _ dang xa hoi. ((hieu van) or (thien van)) nam thuc va doanh va cua tre*.