Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
hanh tranh » canh tranh, hanh trinh, hanh trang
doi chieu » doc hieu, doi chi, ho chieu
cua tong » cua dong, cua nong, cua song
van than » van thanh, van thang, van tuan
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: doi chieu sang - hanh tranh ((cua tong) OR (cua cong)) cong ((van than) OR (dan chan)) cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sang - hanh tranh ((cua tong) OR (cua cong)) cong ((van than) or (dan chan)) cao~".
• Adding a wildcard symbol may retrieve word variants: doi chieu sang - hanh tranh ((cua tong) OR (cua cong)) cong ((van than) or (dan chan)) cao*.