Perhaps you should try some spelling variations:
thieu xanh » hieu manh, thien anh, thien danh
chieu xanh » chieu sach, chieu sang, chieu tinh
tranh cua » doanh cua, manh cua
dung cong » dung trong
doan phan » doanh phan, toan phan, dan phan
cua dung » cua dang, cua dong, qua dung
dam phan » d phan, va phan, van phan

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

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