Perhaps you should try some spelling variations:
chieu xanh » chieu sang, chieu tinh, hieu manh
chieu sach » chinh sach, chiet tach, chieu sang
thanh tang » thanh thang, thanh trang, thanh tung
tang luan » dung luan
luan hang » luan nang, luan han, luan hung
hang cong » dang cong, hang nong, bang cong
manh toan » thanh toan, anh tuan, tinh toan
van tuan » van quan, van ban, anh tuan

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

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