Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
nam thuc » nam thuoc, am thuc, nam thu
danh doi » danh di, thanh doi, dung doi
te sach » toc sach
thuc va » thuc vat, thuc dan, thuc day
va danh » va dinh, va dan, va hanh
doi cua » dai cua, hoi cua
cua tre » cua te, cuu tre, cua triet

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