Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu xanh » chieu sach, chieu sang, chieu tinh
hanh trinh » hanh chinh
cong bang » cuong bang, dong bang, hong bang
bang khan » bang nhan, bang thanh, dang khanh
cua dang » cua ban
khan ap » khan cap, han ap, khan dam

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 xanh - ((hanh trinh) or (canh tranh)) ((cua dang) OR (cua cong)) cong bang khan ap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu xanh - ((hanh trinh) OR (canh tranh)) ((cua dang) OR (cua cong)) cong bang khan ap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu xanh - ((hanh trinh) or (canh tranh)) ((cua dang) OR (cua cong)) cong bang khan ap".
• Adding a wildcard symbol may retrieve word variants: theo chieu xanh - ((hanh trinh) or (canh tranh)) ((cua dang) OR (cua cong)) cong bang khan ap*.