Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
van chat » cao chat
chu bang » thu bang, chuc nang, chu quang
hanh dai » hanh tai, hanh dao, vanh dai
thi nang » thi cong, ki nang, thi hanh
va hanh » van hanh, va thanh, va danh
te sach » toc sach
ve chat » va chat
huu va » cuu va, tuu va

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ((chu bang) or (thi nang)) xa hoi. hieu ((ve chat) OR (van chat)) huu va hanh dai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((chu bang) OR (thi nang)) xa hoi. hieu ((ve chat) OR (van chat)) huu va hanh dai cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((chu bang) or (thi nang)) xa hoi. hieu ((ve chat) OR (van chat)) huu va hanh dai cua triet".
• Adding a wildcard symbol may retrieve word variants: te sach ((chu bang) or (thi nang)) xa hoi. hieu ((ve chat) OR (van chat)) huu va hanh dai cua triet*.