Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
khach doi » khac do, sach doi, khac dai
hanh dai » hanh tai, hanh dao, vanh dai
nang co » nang cao, nang doc, nang noi
khac di » khac do
van cam » van nam, van cau, van dam
van lam » van nam
va hanh » van hanh, va thanh, va danh
co loi » co hoi
luc va » duc va, tuc va, loc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu ((khach doi) or (khac di)) nang co loi. hieu ((van cam) OR (van lam)) luc va hanh dai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu ((khach doi) OR (khac di)) nang co loi. hieu ((van cam) OR (van lam)) luc va hanh dai cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu ((khach doi) or (khac di)) nang co loi. hieu ((van cam) OR (van lam)) luc va hanh dai cua triet".
• Adding a wildcard symbol may retrieve word variants: vu ((khach doi) or (khac di)) nang co loi. hieu ((van cam) OR (van lam)) luc va hanh dai cua triet*.