Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
danh lai » danh sai, gianh lai, dinh lam
sach ty » sach tu, sach thu, xach tay
cam duc » cam xuc, cao duc, pham duc
va danh » va dinh, va dan, va hanh
lai cua » dai cua, hai cua, lai chau
nang o » nang co, nang ho, nang ro
o hoi » co hoi, o hoc, o hai

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) OR (sach y)) nang o hoi. ((lieu va) or (hieu qua)) cam duc va danh lai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu ((sach ty) OR (sach y)) nang o hoi. ((lieu va) OR (hieu qua)) cam duc va danh lai cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu ((sach ty) OR (sach y)) nang o hoi. ((lieu va) or (hieu qua)) cam duc va danh lai cua triet".
• Adding a wildcard symbol may retrieve word variants: thu ((sach ty) OR (sach y)) nang o hoi. ((lieu va) or (hieu qua)) cam duc va danh lai cua triet*.