Perhaps you should try some spelling variations:
duong cong » dung cong, luong cong, duong trong
chieu xanh » chieu sach, chieu sang, chieu tinh
toc chieu » toc thieu, doc hieu, hoc thieu
canh manh » lanh manh, canh tranh, van manh
cua duong » cua dong, cua huong, qua duong
cong tan » cong tac, cong san, cong thanh
tan chan » dan chan, ban chan, can chan
chan cau » phan cau, can cau, chinh cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc chieu xanh - ((canh manh) or (cach mang)) cua duong cong tan chan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc chieu xanh - ((canh manh) OR (cach mang)) cua duong cong tan chan cau.
• Adding a wildcard symbol may retrieve word variants: toc chieu xanh - ((canh manh) or (cach mang)) cua duong cong tan chan cau*.