Perhaps you should try some spelling variations:
doanh cua » doanh luan
hieu van » hieu va, thien van, lieu va
nam thuc » nam thuoc, am thuc, nam thu
va doanh » van doanh, vay doanh, va danh
cua chua » sua chua, cua chu, cua nhua
chua tre » chua tri, cua tre, chua trieu
te sach » toc sach
dang xa » dang xay, lang xa, dang va
dang ha » dong ha, dung ha, lang ha
thuc va » thuc vat, thuc dan, thuc day

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 y ((dang xa) or (dang ha)) hoi. hieu van nam thuc va doanh cua chua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y ((dang xa) OR (dang ha)) hoi. hieu van nam thuc va doanh cua chua tre.
• Adding a wildcard symbol may retrieve word variants: te sach y ((dang xa) or (dang ha)) hoi. hieu van nam thuc va doanh cua chua tre*.