Perhaps you should try some spelling variations:
chieu xanh » chieu sang, chieu tinh, hieu manh
chieu sach » chinh sach, chiet tach, chieu sang
xanh hanh » danh thanh, ban hanh, van hanh
bang cong » dang cong, bang song, hang cong
hanh cua » manh cua, hang cua, hanh sua
ban cong » van cong, phan cong, ban huong
dan toan » van toan, dan than, 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: theo ((chieu xanh) or (chieu sach)) - xanh hanh cua ((ban cong) OR (bang cong)) dan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu xanh) OR (chieu sach)) - xanh hanh cua ((ban cong) OR (bang cong)) dan toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu xanh) or (chieu sach)) - xanh hanh cua ((ban cong) OR (bang cong)) dan toan cau".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu xanh) or (chieu sach)) - xanh hanh cua ((ban cong) OR (bang cong)) dan toan cau*.