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