Perhaps you should try some spelling variations:
nhung phuong » dung phuong, nhu phuong, truong phuong
nhung tuong » nhung huong, hung vuong, nhung cong
hieu sang » chieu sang, hieu lang, hieu quang
tranh cua » doanh cua, manh cua
doc hieu » toc thieu, hoc thieu, hoc hien
dan than » dan chan, ban than, van than
than cau » toan cau, phan cau, than cap

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu sang - canh tranh cua ((nhung tuong) OR (nhung phuong)) dan than cau~".
• Adding a wildcard symbol may retrieve word variants: doc hieu sang - canh tranh cua ((nhung tuong) OR (nhung phuong)) dan than cau*.