Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
hanh trang » thanh trung, hanh trinh, minh trang
thong cong » trong cong, tong cong, thong thong
va thong » va thuong, va phuong, he thong
cong san » cong tac
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 - ((hanh trang) OR (canh tranh)) va thong cong san ((than cau) or (than cap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - ((hanh trang) OR (canh tranh)) va thong cong san ((than cau) OR (than cap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu sach - ((hanh trang) OR (canh tranh)) va thong cong san ((than cau) or (than cap))".
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - ((hanh trang) OR (canh tranh)) va thong cong san ((than cau) or (than cap))*.