Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh dai » hanh tai, hanh dao, vanh dai
toc sach » hoc sach, doc sach, thuoc sach
thi cong » tai cong, thien cong
chu bang » thu bang, chuc nang, chu quang
va hanh » van hanh, va thanh, va danh
v pham » vi pham
d pham » d phan
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: toc sach ((chu bang) or (thi cong)) xa hoi. hieu ((v pham) OR (d pham)) huu va hanh dai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ((chu bang) OR (thi cong)) xa hoi. hieu ((v pham) OR (d pham)) huu va hanh dai cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ((chu bang) or (thi cong)) xa hoi. hieu ((v pham) OR (d pham)) huu va hanh dai cua triet*".