Perhaps you should try some spelling variations:
danh khien » danh kien, doanh chien, dinh kien
cham thuc » nham thuc, pham thuc, tham thuc
khien cua » khien qua, khien tu, trien cua
qua cham » qua hai, qua cac, va cham
sach ty » sach tu, sach thu, xach tay
thuc va » thuc vat, thuc dan, thuc day
va danh » va dinh, va dan, va hanh
cua te » cua tu
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc ((sach ty) or (sach y)) nang x hoi. hieu qua cham thuc va danh khien cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((sach ty) OR (sach y)) nang x hoi. hieu qua cham thuc va danh khien cua te.
• Adding a wildcard symbol may retrieve word variants: doc ((sach ty) or (sach y)) nang x hoi. hieu qua cham thuc va danh khien cua te*.