Perhaps you should try some spelling variations:
"trien thi luan van kinh doanh" » "trieu thi luan van kinh doanh", "tren thi luan van kinh doanh", "trien chi luan van kinh doanh", "trien thi lan van kinh doanh", "trien thi xuan van kinh doanh", "trien thi loan van kinh doanh", "trien thi luan va kinh doanh", "trien thi luan van minh doanh", "trien thi luan van dinh 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 minh doanh", "tieu thi luan van dinh 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 ("trien thi luan van kinh doanh"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("tieu thi luan van kinh doanh") OR ("trien thi luan van kinh doanh")).
• Removing quotes may allow a broader search: (( tieu thi luan van kinh doanh ) or ( trien thi luan van kinh doanh )).
• Adding a wildcard symbol may retrieve word variants: (("tieu thi luan van kinh doanh") or ("trien thi luan van kinh doanh"))*.