Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
danh dai » danh dau, danh di, danh sai
pham duy » pham duc
qua pham » quan pham, quy pham, qua cham
sach dao » lanh dao
sach va » sach xa, sach ha, sach nha
va danh » va dinh, va dan, va hanh
ma hoi » mai hoi, ma hoa, me hoi
duy va » duy vat, duy van, day va

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc ((sach va) or (sach dao)) nang ((ma hoi) OR (xa hoi)). hieu qua pham duy va danh dai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((sach va) OR (sach dao)) nang ((ma hoi) OR (xa hoi)). hieu qua pham duy va danh dai cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc ((sach va) or (sach dao)) nang ((ma hoi) OR (xa hoi)). hieu qua pham duy va danh dai cua triet".
• Adding a wildcard symbol may retrieve word variants: toc ((sach va) or (sach dao)) nang ((ma hoi) OR (xa hoi)). hieu qua pham duy va danh dai cua triet*.