Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
thong cong » tong cong, thong thong, phong chong
tranh van » tran van, trinh van, thanh van
than cau » toan cau, phan cau, thanh chau
than cap » khan cap, thanh lap, thanh cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chieu sach - canh tranh van ((thong cong) or (trong cong)) van ((than cau) OR (than cap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - canh tranh van ((thong cong) OR (trong cong)) van ((than cau) OR (than cap))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu sach - canh tranh van ((thong cong) or (trong cong)) van ((than cau) OR (than cap))*".