Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu tinh, hieu manh
chieu sang » chieu sach, hieu lang, nhieu tang
hanh tranh » canh tranh, hanh trinh, hanh trang
duong cong » dung cong, luong cong, duong trong
tranh cua » doanh cua, manh cua
dong cong » dung cong, dang cong, cong cong
tac tren » rac tren, tai tren, tap tren
tren cau » tren ca, tren cay, tren tau

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chieu xanh) OR (chieu sang)) - hanh tranh cua ((dong cong) or (duong cong)) tac tren cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu xanh) OR (chieu sang)) - hanh tranh cua ((dong cong) OR (duong cong)) tac tren cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu xanh) OR (chieu sang)) - hanh tranh cua ((dong cong) or (duong cong)) tac tren cau".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu xanh) OR (chieu sang)) - hanh tranh cua ((dong cong) or (duong cong)) tac tren cau*.