Perhaps you should try some spelling variations:
theo chinh » thien chinh, te chinh, che chinh
canh tran » canh tranh, hanh trang, banh trang
van nhung » van nhuong, va nhung, van hung
cong sang » cong lang, cong vang, cong bang
tran van » luan van
cong san » cong tac
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chinh sach - canh tran van nhung ((cong san) or (cong sang)) toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chinh sach - canh tran van nhung ((cong san) OR (cong sang)) toan ban.
• Adding a wildcard symbol may retrieve word variants: theo chinh sach - canh tran van nhung ((cong san) or (cong sang)) toan ban*.