Perhaps you should try some spelling variations:
"tieu thi luan van minh doanh" » "tieu thi luan van minh danh", "tieu thi luan van minh doan", "tieu thi luan van chinh doanh", "trieu thi luan van minh doanh", "tiep thi luan van minh doanh", "tieu thu luan van minh doanh", "tieu thi lan van minh doanh", "tieu thi xuan van minh doanh", "tieu thi loan van minh doanh"
"tieu thi luan van kinh doanh" » "trieu thi luan van kinh doanh", "tiep thi luan van kinh doanh", "tieu thu luan van kinh doanh", "tieu thi lan van kinh doanh", "tieu thi xuan van kinh doanh", "tieu thi loan van kinh doanh", "tieu thi luan va kinh doanh", "tieu thi luan van dinh doanh", "tieu 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: (("tieu thi luan van kinh doanh") OR ("tieu thi luan van minh doanh"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"tieu thi luan van kinh doanh\") OR (\"tieu thi luan van minh doanh\"))".
• Removing quotes may allow a broader search: (( tieu thi luan van kinh doanh ) OR ( tieu thi luan van minh doanh )).
• Adding a wildcard symbol may retrieve word variants: (("tieu thi luan van kinh doanh") OR ("tieu thi luan van minh doanh"))*.