Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
chieu xanh » chieu sach, chieu sang, chieu tinh
tranh chu » tranh chua, trinh chu, thanh chu
tien anh » tieng anh, tien manh, dien anh
chu bang » thu bang, chuc nang, chu quang
cong dan » cong san, cong tan, cong dong
phan cau » phan dau, phan cac, phan tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((chieu xanh) or (tien anh)) - hanh tranh chu bang ((cong dan) OR (huong dan)) phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu xanh) OR (tien anh)) - hanh tranh chu bang ((cong dan) OR (huong dan)) phan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu xanh) or (tien anh)) - hanh tranh chu bang ((cong dan) OR (huong dan)) phan cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu xanh) or (tien anh)) - hanh tranh chu bang ((cong dan) OR (huong dan)) phan cau*.