Perhaps you should try some spelling variations:
chieu xanh » chieu sang, chieu tinh, hieu manh
chieu sach » chinh sach, chiet tach, chieu sang
hoang tran » hoang tuan, hoang thanh, hoang van
hanh dung » thanh dung, anh dung, hanh dong
dang toan » dang tran, dan toan, dung toan
dung cua » dung luan, dung cho
cua dung » cua dang, cua dong, qua dung

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)) - hanh dung cua dung trong ((dang toan) or (hoang tran)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu xanh) OR (chieu sach)) - hanh dung cua dung trong ((dang toan) OR (hoang tran)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu xanh) OR (chieu sach)) - hanh dung cua dung trong ((dang toan) or (hoang tran)) cau".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu xanh) OR (chieu sach)) - hanh dung cua dung trong ((dang toan) or (hoang tran)) cau*.