Perhaps you should try some spelling variations:
thieu xanh » hieu manh, thien anh, thien danh
chieu xanh » chieu sach, chieu sang, chieu tinh
cua duong » cua dong, cua huong, tuan duong
qua duong » quan duong, qua dung, qua dong
trong san » trong cac, cong san, dong san
san phan » san pham, van phan, sat phan
phan cau » phan dau, phan cac, phan tu

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) OR (qua duong)) trong san 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) OR (qua duong)) trong san 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) OR (qua duong)) trong san phan cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) or (chieu xanh)) - canh tranh ((cua duong) OR (qua duong)) trong san phan cau*.