Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
hanh tranh » canh tranh, hanh trinh, hanh trang
theo hieu » theo tieu, thien hieu, thuc hieu
cua thong » cua thuong, cua tong, suat thong
cua khong » hua khong, cua phuong, cua thuong
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((theo hieu) or (theo chieu)) lang - hanh tranh ((cua thong) OR (cua khong)) cong dan toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo hieu) OR (theo chieu)) lang - hanh tranh ((cua thong) OR (cua khong)) cong dan toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo hieu) or (theo chieu)) lang - hanh tranh ((cua thong) OR (cua khong)) cong dan toan tap".
• Adding a wildcard symbol may retrieve word variants: ((theo hieu) or (theo chieu)) lang - hanh tranh ((cua thong) OR (cua khong)) cong dan toan tap*.