Perhaps you should try some spelling variations:
sach thue » sach thu, sach thieu, sach tham
day hanh » day nhanh, day thanh, dao hanh
thuc day » thuc dan, thuc vat
nam thuc » nam thuoc, am thuc, nam thu
mai khoi » mai khoa, tai khoa, cac khoi
hanh de » hanh ve, hanh kem
thi van » thi lan, thi hanh, thi nang
su tien » su kien, su hien, tu tieng
sach ty » sach y, sach tu, sach thu
mai hoi » dai hoi, lai hoi, mai doi
de su » den su, ve su, de 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 ty) or (sach thue)) nang ((mai hoi) OR (mai khoi)). thi van nam thuc day hanh de su tien~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach ty) OR (sach thue)) nang ((mai hoi) OR (mai khoi)). thi van nam thuc day hanh de su tien.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach ty) or (sach thue)) nang ((mai hoi) OR (mai khoi)). thi van nam thuc day hanh de su tien".
• Adding a wildcard symbol may retrieve word variants: te ((sach ty) or (sach thue)) nang ((mai hoi) OR (mai khoi)). thi van nam thuc day hanh de su tien*.