Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
nam thuc » nam thuoc, am thuc, nam thu
hang doi » hang di, hang loi, huong doi
te sach » toc sach
tang ma » mang may, tang van
thuc va » thuc vat, thuc dan, thuc day
va hang » van hang, va nang, va lang
doi cua » dai cua, hoi cua
cua te » cua tu

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 ((tang ma) or (nang cao)) hoi. hieu van nam thuc va hang doi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y ((tang ma) OR (nang cao)) hoi. hieu van nam thuc va hang doi cua te.
• Adding a wildcard symbol may retrieve word variants: te sach y ((tang ma) or (nang cao)) hoi. hieu van nam thuc va hang doi cua te*.