Perhaps you should try some spelling variations:
trinh chuan » trinh han, trinh quan, trinh luan
chieu xanh » chieu sach, chieu sang, chieu tinh
canh trinh » canh tranh, hanh trinh, canh tinh
chuan dong » chua dong, chuan long, chuyen dong
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh
toan cau » toan cao, toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chieu xanh) or (trieu tinh)) - canh trinh chuan dong ((cong dan) OR (cong tan)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu xanh) OR (trieu tinh)) - canh trinh chuan dong ((cong dan) OR (cong tan)) toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu xanh) or (trieu tinh)) - canh trinh chuan dong ((cong dan) OR (cong tan)) toan cau".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu xanh) or (trieu tinh)) - canh trinh chuan dong ((cong dan) OR (cong tan)) toan cau*.