Perhaps you should try some spelling variations:
sach tham » sach nha
cau tren » cu tren, dau tren, ca tren
sach thu » sach thue, sach thieu, cach thuc
cau treo » cau theo, cau triet, cau trieu
lam duoc » nam duoc, luat duoc, lam thuoc
ma hang » mat hang, mua hang, va hang
duoc ma » duoc lam
thi van » thi lan, thi hanh, thi nang
lang xa » lang ha, dang xay, lang van
van lam » van nam

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 tham)) lang xa hoi. thi van lam duoc ma hang va ((cau treo) OR (cau tren))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach thu) or (sach tham)) lang xa hoi. thi van lam duoc ma hang va ((cau treo) OR (cau tren))~".
• Adding a wildcard symbol may retrieve word variants: te ((sach thu) or (sach tham)) lang xa hoi. thi van lam duoc ma hang va ((cau treo) OR (cau tren))*.