Perhaps you should try some spelling variations:
duong cong » dung cong, luong cong, duong trong
thieu xanh » chieu xanh, hieu manh, thien anh
hoc thieu » toc thieu, hoc hien
canh manh » lanh manh, canh tranh, van manh
cua duong » cua dong, cua huong, qua duong
cong ban » cong bang, cong san, cong tan
ban chan » dan chan, ban than, ban nhan
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: hoc thieu xanh - ((canh manh) or (cach mang)) cua duong cong ban chan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - ((canh manh) OR (cach mang)) cua duong cong ban chan cau.
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - ((canh manh) or (cach mang)) cua duong cong ban chan cau*.