Perhaps you should try some spelling variations:
"trieu thi luan van minh doanh" » "trieu thi luan van minh danh", "trieu thi luan van minh doan", "trieu thi luan van chinh doanh", "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"
"su thi lang van kinh doanh" » "su thi nang van kinh doanh", "su thi lan van kinh doanh", "su thi hang van kinh doanh", "su thi dang van kinh doanh", "su thi tang van kinh doanh", "su thi hoang van kinh doanh", "su thi lang va kinh doanh", "su thi lang van dinh doanh", "su thi lang van binh doanh"

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 ("su thi lang van kinh doanh"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("trieu thi luan van minh doanh") OR ("su thi lang van kinh doanh")).
• Removing quotes may allow a broader search: (( trieu thi luan van minh doanh ) or ( su thi lang van kinh doanh )).
• Adding a wildcard symbol may retrieve word variants: (("trieu thi luan van minh doanh") or ("su thi lang van kinh doanh"))*.