Perhaps you should try some spelling variations:
chau triet » cua triet, cau trieu, chau tuyet
cau triet » cau trieu, su triet, cua triet
hanh lai » hanh lam, hanh tai, thanh lap
pham duy » pham duc
thu sach » tu sach, thuat sach, thuoc sach
hieu ve » hieu va, hieu van
sach ty » sach y, sach tu, sach thu
va hanh » van hanh, va thanh, va danh
ve pham » vi pham, v pham, ve phan
duy va » duy vat, duy van, day va
ma hoi » mai hoi, ma hoa, me hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ty xang ((ma hoi) OR (xa hoi)). hieu ve pham duy va hanh lai ((chau triet) or (cau triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ty xang ((ma hoi) OR (xa hoi)). hieu ve pham duy va hanh lai ((chau triet) OR (cau triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ty xang ((ma hoi) OR (xa hoi)). hieu ve pham duy va hanh lai ((chau triet) or (cau triet))".
• Adding a wildcard symbol may retrieve word variants: thu sach ty xang ((ma hoi) OR (xa hoi)). hieu ve pham duy va hanh lai ((chau triet) or (cau triet))*.