Perhaps you should try some spelling variations:
sach thue » sach thieu, sach tham, cach thuc
sach thu » sach thieu, sach tham, cach thuc
hanh dai » hanh tai, hanh dao, vanh dai
van hanh » van thanh, ban hanh, van anh
xuc van » duc van, luc van, vuc van
cac xuc » cam xuc, cac nuoc, chat xuc
hieu ve » hieu va, hieu van
tang ma » mang may, tang van
ve cac » va cac, vien cac
ma hoi » mai hoi, xa hoi, ma hoa
cua tu » cua tuc, cua cu, cua te
cua su » qua su

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 thu) OR (sach thue)) tang ma hoi. hieu ve cac xuc van hanh dai ((cua tu) OR (cua su))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach thu) or (sach thue)) tang ma hoi. hieu ve cac xuc van hanh dai ((cua tu) OR (cua su))~".
• Adding a wildcard symbol may retrieve word variants: te ((sach thu) or (sach thue)) tang ma hoi. hieu ve cac xuc van hanh dai ((cua tu) OR (cua su))*.