Perhaps you should try some spelling variations:
nhung phuong » dung phuong, nhu phuong, truong phuong
nhung tuong » nhung huong, hung vuong, nhung cong
chieu sang » chieu sach, chieu xanh, hieu lang
hanh tranh » hanh trinh, hanh trang, lanh tranh
ho chieu » theo chieu, hoc thieu, doi chieu
dan toan » van toan, dan than, manh toan
toan cau » toan cao, toan ban, toan tap

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

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