Perhaps you should try some spelling variations:
nhung thuong » nhung phuong, nhung huong, hang thuong
nhung tuong » nhung huong, nhung phuong, hung vuong
chieu xanh » chieu sach, chieu sang, chieu tinh
hien xanh » hien hanh, hien nhanh, hien khanh
tranh cua » doanh cua, manh cua
ban toan » bai toan, ban than, van toan
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((hien xanh) OR (chieu xanh)) - canh tranh cua ((nhung thuong) or (nhung tuong)) ban toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien xanh) OR (chieu xanh)) - canh tranh cua ((nhung thuong) OR (nhung tuong)) ban toan tap*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien xanh) OR (chieu xanh)) - canh tranh cua ((nhung thuong) or (nhung tuong)) ban toan tap*".