Perhaps you should try some spelling variations:
chieu sach » chinh sach, chieu sang, chieu xanh
cua thuong » cua phuong, ca thuong, cua huong
cua truong » cua trung, xuan truong, cac truong
canh ban » can ban, canh dan, canh van
cong tan » cong tac, cong san, cong thanh
tan phan » toan phan, than phan, van phan
phan dau » phan tu, hang dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chiet tach) or (chieu sach)) - canh ban ((cua thuong) OR (cua truong)) cong tan phan dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chiet tach) OR (chieu sach)) - canh ban ((cua thuong) OR (cua truong)) cong tan phan dau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chiet tach) or (chieu sach)) - canh ban ((cua thuong) OR (cua truong)) cong tan phan dau".
• Adding a wildcard symbol may retrieve word variants: ho ((chiet tach) or (chieu sach)) - canh ban ((cua thuong) OR (cua truong)) cong tan phan dau*.