Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
chieu xanh » chieu sang, chieu tinh, hieu manh
cua thuong » cua truong, cua phuong, ca thuong
canh ban » can ban, canh dan, canh van
cong van » cong vang, song van, cong tan
cong san » cong tac
ban cua » ban quan
tan ban » toan ban, tang 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: ho ((chieu sach) or (chieu xanh)) - canh ban cua thuong ((cong van) OR (cong san)) tan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sach) OR (chieu xanh)) - canh ban cua thuong ((cong van) OR (cong san)) tan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sach) or (chieu xanh)) - canh ban cua thuong ((cong van) OR (cong san)) tan ban".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sach) or (chieu xanh)) - canh ban cua thuong ((cong van) OR (cong san)) tan ban*.