Perhaps you should try some spelling variations:
chieu xanh » chieu sang, chieu tinh, hieu manh
chieu sach » chinh sach, chiet tach, chieu sang
luan nhung » luan chung, luan hung, quan nhung
nhung cong » dung cong, thong cong, hang cong
quang toan » quang tuan, quang tran, quang doan
hanh dong » anh dong, ha dong
dong luan » dung luan, tong luan, dong xuan
vang toan » van toan, dang toan, vang trang

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((chieu xanh) OR (chieu sach)) - hanh dong luan nhung cong ((vang toan) or (quang toan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu xanh) OR (chieu sach)) - hanh dong luan nhung cong ((vang toan) OR (quang toan)) cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chieu xanh) OR (chieu sach)) - hanh dong luan nhung cong ((vang toan) or (quang toan)) cao".
• Adding a wildcard symbol may retrieve word variants: doi ((chieu xanh) OR (chieu sach)) - hanh dong luan nhung cong ((vang toan) or (quang toan)) cao*.