Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
cach thuc » anh thuc
ly quang » le quang
hanh dai » hanh tai, hanh dao, vanh dai
va hanh » van hanh, va thanh, va danh
su sach » so sach, vu sach
cac thu » cac thoi
hieu ve » hieu va, hieu van

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ((ly quang) OR (vu quang)) xa hoi. hieu ve ((cac thu) or (cach thuc)) va hanh dai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((ly quang) OR (vu quang)) xa hoi. hieu ve ((cac thu) OR (cach thuc)) va hanh dai cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((ly quang) OR (vu quang)) xa hoi. hieu ve ((cac thu) or (cach thuc)) va hanh dai cua triet".
• Adding a wildcard symbol may retrieve word variants: su sach ((ly quang) OR (vu quang)) xa hoi. hieu ve ((cac thu) or (cach thuc)) va hanh dai cua triet*.