Perhaps you should try some spelling variations:
nhung phuong » dung phuong, nhu phuong, truong phuong
nhung chong » nhung cong, nhung phong, phong chong
hoa thiet » hoc thiet, toan thiet, hoa viet
tranh cua » doanh cua, manh cua
ho chieu » theo chieu, hoc thieu, doi chieu
tan van » tran van, tang van, luan van

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoa thiet) or (ho chieu)) tach - canh tranh cua ((nhung chong) OR (nhung phuong)) tan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoa thiet) OR (ho chieu)) tach - canh tranh cua ((nhung chong) OR (nhung phuong)) tan van ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoa thiet) or (ho chieu)) tach - canh tranh cua ((nhung chong) OR (nhung phuong)) tan van ban".
• Adding a wildcard symbol may retrieve word variants: ((hoa thiet) or (ho chieu)) tach - canh tranh cua ((nhung chong) OR (nhung phuong)) tan van ban*.