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