Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
thanh tung » thanh cong
khong cong » thong cong, khong cang, chong cong
cua khong » hua khong, cua phuong, cua thuong
ho chieu » theo chieu, hoc thieu, doi chieu
dan than » dan chan, ban than, dan toan
van than » van thanh, van thang, van tuan

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 - ((thanh trung) OR (thanh tung)) cua khong cong ((dan than) OR (van than)) cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu xanh - ((thanh trung) or (thanh tung)) cua khong cong ((dan than) OR (van than)) cau~".
• Adding a wildcard symbol may retrieve word variants: ho chieu xanh - ((thanh trung) or (thanh tung)) cua khong cong ((dan than) OR (van than)) cau*.