Perhaps you should try some spelling variations:
hanh trang » thanh trung, canh tranh, hanh trinh
chieu xanh » chieu sach, chieu sang, chieu tinh
hieu xanh » hieu manh, hieu nganh, dieu hanh
cua khong » hua khong, cua phuong, cua thuong
cong san » cong tac
san toan » van toan, dan toan, manh toan
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: doc ((hieu xanh) OR (chieu xanh)) - hanh trang ((suat thong) or (cua khong)) cong san toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((hieu xanh) OR (chieu xanh)) - hanh trang ((suat thong) OR (cua khong)) cong san toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc ((hieu xanh) OR (chieu xanh)) - hanh trang ((suat thong) or (cua khong)) cong san toan cau".
• Adding a wildcard symbol may retrieve word variants: doc ((hieu xanh) OR (chieu xanh)) - hanh trang ((suat thong) or (cua khong)) cong san toan cau*.