Perhaps you should try some spelling variations:
chiet tach » chieu sach
nhung cong » dung cong, thong cong, hang cong
tranh cua » doanh cua, manh cua
cua nhung » va nhung
hoang van » hang va
ho chiet » ho chieu, ho thiet, hoc thiet
doan van » doan va, luan van, tran van

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chiet tach - canh tranh cua nhung cong ((doan van) or (hoang van)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chiet tach - canh tranh cua nhung cong ((doan van) OR (hoang van)) ban.
• Adding a wildcard symbol may retrieve word variants: ho chiet tach - canh tranh cua nhung cong ((doan van) or (hoang van)) ban*.