Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu tinh, hieu manh
chieu sang » chieu sach, hieu lang, nhieu tang
thanh tung » thanh cong
duong cong » dung cong, luong cong, duong trong
cua duong » cua dong, cua huong, qua duong
tung cua » trung cua, tuong cua, dung cua
cong tac » cong ty
phan cau » phan dau, phan cac, phan lap

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu xanh) OR (chieu sang)) - thanh tung cua duong cong tac ((phan cau) OR (phan tu))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu xanh) OR (chieu sang)) - thanh tung cua duong cong tac ((phan cau) or (phan tu))~".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu xanh) OR (chieu sang)) - thanh tung cua duong cong tac ((phan cau) or (phan tu))*.