Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
hieu quang » thieu quang, hieu quan, hieu qua
dung cong » dung trong
cong cua » cong cu, dong cua, huong cua
cua dung » cua dang, cua dong, qua dung
cong tan » cong tac, cong san, cong thanh
toan cau » toan ban, toan tap, toan tai
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: ho ((chieu xanh) or (hieu quang)) - thanh cong cua dung cong tan ((toan cau) OR (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu xanh) OR (hieu quang)) - thanh cong cua dung cong tan ((toan cau) OR (toan cao)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu xanh) or (hieu quang)) - thanh cong cua dung cong tan ((toan cau) OR (toan cao))".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu xanh) or (hieu quang)) - thanh cong cua dung cong tan ((toan cau) OR (toan cao))*.