Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, hieu manh
chieu tinh » trieu tinh, lieu tinh, chau tinh
duong cong » dung cong, duong trong, trong cong
luong cong » dung cong, trong cong, cong cong
phan tang » phap tang, phan dang, phan cang
tang luan » dung luan
tac toan » tap toan, tam toan, hach 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: doi ((chieu xanh) or (chieu tinh)) - phan tang luan ((duong cong) OR (luong cong)) tac toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu xanh) OR (chieu tinh)) - phan tang luan ((duong cong) OR (luong cong)) tac toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chieu xanh) or (chieu tinh)) - phan tang luan ((duong cong) OR (luong cong)) tac toan cau".
• Adding a wildcard symbol may retrieve word variants: doi ((chieu xanh) or (chieu tinh)) - phan tang luan ((duong cong) OR (luong cong)) tac toan cau*.