Perhaps you should try some spelling variations:
"nguyen quoc doanh doanh luan van" » "nguyen duc doanh doanh luan van", "nguyen ngoc doanh doanh luan van", "nguyen quang doanh doanh luan van", "nguyen quoc toan doanh luan van", "nguyen quoc doanh hoan luan van", "nguyen quoc doanh thanh luan van", "nguyen quoc doanh doanh nhan van", "nguyen quoc danh doanh luan van", "nguyen quoc khanh doanh luan van"
"chien luoc kinh doanh luan van" » "chien luoc kinh doanh nhan van", "hien luoc kinh doanh luan van", "thien luoc kinh doanh luan van", "chien duoc kinh doanh luan van", "chien cuoc kinh doanh luan van", "chien luc kinh doanh luan van", "chien luoc dinh doanh luan van", "chien luoc minh doanh 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: (("chien luoc kinh doanh luan van") or ("nguyen quoc doanh doanh luan van"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("chien luoc kinh doanh luan van") OR ("nguyen quoc doanh doanh luan van"))*.
• Removing quotes may allow a broader search: (( chien luoc kinh doanh luan van ) or ( nguyen quoc doanh doanh luan van ))*.