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