Perhaps you should try some spelling variations:
canh trinh » canh tranh, hanh trinh, canh tinh
trinh qua » trinh quan, trinh cua, trinh quang
dung cong » dung trong
ho chieu » theo chieu, hoc thieu, doi chieu
thi hieu » thi chieu, thi hien, thi dieu
qua dung » quang dung, su dung, qua song
cong dan » cong san, cong tan, huong dan
toan cau » toan ban, toan tap, toan tai
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) or (thi hieu)) xanh - canh trinh qua dung cong dan ((toan cau) OR (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (thi hieu)) xanh - canh trinh qua dung cong dan ((toan cau) OR (toan cao))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) or (thi hieu)) xanh - canh trinh qua dung cong dan ((toan cau) OR (toan cao))*".