Perhaps you should try some spelling variations:
sach thue » sach thu, sach thieu, sach tham
thi hanh » thi thanh
day hanh » day nhanh, day thanh, dao hanh
nang mai » nang ma, nang tai, lang mai
thuc day » thuc dan, thuc vat
nam thuc » nam thuoc, am thuc, nam thu
hanh de » hanh ve, hanh kem
thi van » thi lan, thi nang
sach ty » sach y, sach tu, sach thu
mai hoi » mai khoi, dai hoi, lai hoi
su tien » su kien, su hien, tu tieng
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. ((thi van) OR (thi hanh)) 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. ((thi van) OR (thi hanh)) 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. ((thi van) OR (thi hanh)) nam thuc day hanh de su tien".
• Adding a wildcard symbol may retrieve word variants: te ((sach ty) or (sach thue)) nang mai hoi. ((thi van) OR (thi hanh)) nam thuc day hanh de su tien*.