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", "thieu thi luan van minh doanh", "trien thi luan van minh doanh", "tieu thi luan van minh doanh"
"sieu thi lang van minh doanh" » "sieu thi lang van kinh doanh", "sieu thi lang van minh danh", "sieu thi lang van minh doan", "dieu tri lang van minh doanh", "su thi lang van minh doanh", "tiep thi lang van minh doanh", "sieu thi nang van minh doanh", "sieu thi lan van minh doanh", "sieu thi hang van minh doanh", "sieu thi dang van minh doanh", "sieu thi tang van minh doanh", "sieu thi hoang 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 ("sieu thi lang van minh doanh"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("trieu thi luan van minh doanh") OR ("sieu thi lang van minh doanh")).
• Removing quotes may allow a broader search: (( trieu thi luan van minh doanh ) or ( sieu thi lang van minh doanh )).
• Adding a wildcard symbol may retrieve word variants: (("trieu thi luan van minh doanh") or ("sieu thi lang van minh doanh"))*.