Perhaps you should try some spelling variations:
dung phuong » dung thuong, bang phuong, dung chung
chieu xanh » chieu sang, chieu tinh, hieu manh
chieu sach » chinh sach, chiet tach, chieu sang
doan toan » doan tuan, doanh hoan, doan trang
toan van » tran van, toan ban, tan van
van dung » van dong, xay dung, tin dung
dan toan » van toan, dan than, manh toan

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)) - tinh toan van dung phuong ((doan toan) or (dan toan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu xanh) OR (chieu sach)) - tinh toan van dung phuong ((doan toan) OR (dan toan)) cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu xanh) OR (chieu sach)) - tinh toan van dung phuong ((doan toan) or (dan toan)) cao".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu xanh) OR (chieu sach)) - tinh toan van dung phuong ((doan toan) or (dan toan)) cao*.