Perhaps you should try some spelling variations:
thieu xanh » hieu manh, thien anh, thien danh
chieu xanh » chieu sach, chieu sang, chieu tinh
duong cong » dung cong, luong cong, duong trong
tranh cua » doanh cua, manh cua
cua duong » cua dong, cua huong, qua duong
san phan » san pham, sat phan, dan phan
van phan » van phong, van thanh, luan 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 duong cong ((san phan) or (van phan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (chieu xanh)) - canh tranh cua duong cong ((san phan) OR (van phan)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu xanh) OR (chieu xanh)) - canh tranh cua duong cong ((san phan) or (van phan)) cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) OR (chieu xanh)) - canh tranh cua duong cong ((san phan) or (van phan)) cau*.