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

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 ((tan van) OR (luan 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 ((tan van) OR (luan 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 ((tan van) OR (luan van)) ban".
• Adding a wildcard symbol may retrieve word variants: ((hoa thiet) or (ho chieu)) tach - canh tranh cua nhung chong ((tan van) OR (luan van)) ban*.