Perhaps you should try some spelling variations:
quang nhung » quang hung, quan nhung, quang phuong
theo chieu » theo tieu, ho chieu, theo chu
chieu xanh » chieu sach, chieu sang, chieu tinh
hanh tinh » hanh trinh, nhanh tinh, thanh tinh
cong dan » huong dan, cong dong, cong tac
cong tan » cong tac, cong thanh, cong ty
cong san » cong tac
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: theo chieu xanh - hanh tinh quang nhung ((((cong dan) OR (cong tan))) or (cong san)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu xanh - hanh tinh quang nhung ((((cong dan) OR (cong tan))) OR (cong san)) toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu xanh - hanh tinh quang nhung ((((cong dan) OR (cong tan))) or (cong san)) toan cao".
• Adding a wildcard symbol may retrieve word variants: theo chieu xanh - hanh tinh quang nhung ((((cong dan) OR (cong tan))) or (cong san)) toan cao*.