Perhaps you should try some spelling variations:
thuat nhung » thuat hung, thuat chuong, thuat dung
thuat chung » thuat chuong, thuat hung, thuat cong
chieu sach » chinh sach, chiet tach, chieu sang
chieu xanh » chieu sang, chieu tinh, hieu manh
cong san » cong tac
san van » tan van, luan van, tran van

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((chieu sach) or (chieu xanh)) - canh tranh ((thuat nhung) OR (thuat chung)) cong san van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu sach) OR (chieu xanh)) - canh tranh ((thuat nhung) OR (thuat chung)) cong san van ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu sach) or (chieu xanh)) - canh tranh ((thuat nhung) OR (thuat chung)) cong san van ban".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu sach) or (chieu xanh)) - canh tranh ((thuat nhung) OR (thuat chung)) cong san van ban*.