Perhaps you should try some spelling variations:
sang tao » hang tai
tao khoi » tao hoi, thao khoa, lao khoa
nam thuc » nam thuoc, am thuc, nam thu
te sach » toc sach
hieu ve » hieu va, hieu van
thuc va » thuc vat, thuc dan, thuc day
danh vi » hanh vi, danh di, danh va
dinh vi » dinh ve, dinh viet, dinh tri
y sang » _ sang, duy sang

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

• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y sang tao khoi. ((hieu ve) OR (hieu qua)) nam thuc va ((danh vi) OR (dinh vi)) cua vat~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y sang tao khoi. ((hieu ve) or (hieu qua)) nam thuc va ((danh vi) OR (dinh vi)) cua vat~".
• Adding a wildcard symbol may retrieve word variants: te sach y sang tao khoi. ((hieu ve) or (hieu qua)) nam thuc va ((danh vi) OR (dinh vi)) cua vat*.