Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh lai » hanh lam, hanh tai, thanh lap
sach ty » sach tu, sach thu, xach tay
qua cac » cua cac
cac duc » cac du, cao duc, cac dac
va hanh » van hanh, va thanh, va danh
lai cua » dai cua, hai cua, lai chau
ma hoi » mai hoi, xa hoi, 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: tu ((sach ty) OR (sach y)) xang ((ma hoi) or (ma hoa)). hieu qua cac duc va hanh lai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ty) OR (sach y)) xang ((ma hoi) OR (ma hoa)). hieu qua cac duc va hanh lai cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ty) OR (sach y)) xang ((ma hoi) or (ma hoa)). hieu qua cac duc va hanh lai cua triet".
• Adding a wildcard symbol may retrieve word variants: tu ((sach ty) OR (sach y)) xang ((ma hoi) or (ma hoa)). hieu qua cac duc va hanh lai cua triet*.