Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
thanh tung » thanh cong
khong cong » thong cong, khong cang, chong cong
hay khong » bay khong, hang khong, hoac khong
ho chieu » theo chieu, hoc thieu, doi chieu
dan phan » doan phan, van phan, dam phan
dan chan » dan gian, dan ca, van chat

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