Perhaps you should try some spelling variations:
nhung phuong » dung phuong, nhu phuong, truong phuong
nhung tuong » nhung huong, hung vuong, nhung cong
hieu xanh » chieu xanh, hieu manh, hieu nganh
tranh cua » doanh cua, manh cua
doc hieu » toc thieu, hoc thieu, hoc hien
toan cau » toan cao, toan ban, toan tai
toan tap » toan ban

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

• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu xanh - canh tranh cua ((nhung tuong) OR (nhung phuong)) dan ((toan cau) OR (toan tap))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu xanh - canh tranh cua ((nhung tuong) OR (nhung phuong)) dan ((toan cau) or (toan tap))~".
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - canh tranh cua ((nhung tuong) OR (nhung phuong)) dan ((toan cau) or (toan tap))*.