Perhaps you should try some spelling variations:
nhung phuong » dung phuong, nhu phuong, truong phuong
nhung huong » nhung tuong, nhung cong, nhung dung
hanh tranh » canh tranh, hanh trinh, hanh trang
hieu xanh » chieu xanh, hieu manh, hieu nganh
tranh cua » doanh cua, manh cua
doc hieu » toc thieu, hoc thieu, hoc hien
toan ban » van ban
than ma » than man, than va, khan ma

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 - hanh tranh cua ((nhung huong) OR (nhung phuong)) dan ((toan ban) OR (than ma))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu xanh - hanh tranh cua ((nhung huong) OR (nhung phuong)) dan ((toan ban) or (than ma))~".
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - hanh tranh cua ((nhung huong) OR (nhung phuong)) dan ((toan ban) or (than ma))*.