Perhaps you should try some spelling variations:
sinh sach » chinh sach, sinh san, sinh danh
sang sach » mang sach, ban sach, sang tac
tranh cua » doanh cua, manh cua
dung cong » dung trong
cua dung » cua dang, cua dong, qua dung
doan van » doan va, hoang van, tran 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: hoc ((sinh sach) OR (sang sach)) - canh tranh cua dung cong ((doan van) or (luan van)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((sinh sach) OR (sang sach)) - canh tranh cua dung cong ((doan van) OR (luan van)) ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((sinh sach) OR (sang sach)) - canh tranh cua dung cong ((doan van) or (luan van)) ban".
• Adding a wildcard symbol may retrieve word variants: hoc ((sinh sach) OR (sang sach)) - canh tranh cua dung cong ((doan van) or (luan van)) ban*.