Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hoc chieu » hoc thieu, hoc hien, hoc dieu
tranh cua » doanh cua, manh cua
cua nhung » va nhung
hoang van » hang va
ho chieu » theo chieu, hoc thieu, doi chieu
dan van » dang van, doan van, dao van

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

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