Perhaps you should try some spelling variations:
"dieu thi luan van minh doanh" » "dieu thi luan van minh danh", "dieu thi luan van minh doan", "dieu thi luan van chinh doanh", "dieu tri luan van minh doanh", "sieu thi luan van minh doanh", "dien thi luan van minh doanh", "dieu thi lan van minh doanh", "dieu thi xuan van minh doanh", "dieu thi loan van minh doanh"
"dieu thi luan van kinh doanh" » "dieu tri luan van kinh doanh", "sieu thi luan van kinh doanh", "dien thi luan van kinh doanh", "dieu thi lan van kinh doanh", "dieu thi xuan van kinh doanh", "dieu thi loan van kinh doanh", "dieu thi luan va kinh doanh", "dieu thi luan van dinh doanh", "dieu thi luan van binh doanh"

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("dieu thi luan van kinh doanh") OR ("dieu thi luan van minh doanh"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"dieu thi luan van kinh doanh\") OR (\"dieu thi luan van minh doanh\"))".
• Removing quotes may allow a broader search: (( dieu thi luan van kinh doanh ) OR ( dieu thi luan van minh doanh )).
• Adding a wildcard symbol may retrieve word variants: (("dieu thi luan van kinh doanh") OR ("dieu thi luan van minh doanh"))*.