Perhaps you should try some spelling variations:
thieu xanh » hieu manh, thien anh, thien danh
chieu xanh » chieu sach, chieu sang, chieu tinh
dung chung » dung cong, dung trung, truong chung
tranh cua » doanh cua, manh cua
dung ung » dung cong
phan cau » phan dau, phan cac, phan tu
xa phan » va phan, a phan, x 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 chung) OR (dung ung)) xa 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 chung) OR (dung ung)) xa 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 chung) OR (dung ung)) xa phan cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) or (chieu xanh)) - canh tranh cua ((dung chung) OR (dung ung)) xa phan cau*.