Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
hanh tranh » canh tranh, hanh trang, lanh tranh
hanh trinh » canh tranh, hanh chinh
nong cong » cong cong, tong cong, nang cong
ho chieu » theo chieu, hoc thieu, doi chieu
cua nong » cua cong, cuu nong, cua dong
dan than » ban than, van than, dan toan
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 xanh - ((hanh tranh) OR (hanh trinh)) cua nong cong ((dan than) OR (dan chan)) cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu xanh - ((hanh tranh) OR (hanh trinh)) cua nong cong ((dan than) or (dan chan)) cao~".
• Adding a wildcard symbol may retrieve word variants: ho chieu xanh - ((hanh tranh) OR (hanh trinh)) cua nong cong ((dan than) or (dan chan)) cao*.