Perhaps you should try some spelling variations:
"trien thi doan van kinh doanh" » "trieu thi doan van kinh doanh", "tren thi doan van kinh doanh", "trien chi doan van kinh doanh", "trien thai doan van kinh doanh", "trien thi hoan van kinh doanh", "trien thi loan van kinh doanh", "trien thi doan va kinh doanh", "trien thi hoang van kinh doanh", "trien thi luan van kinh doanh", "trien thi doan van minh doanh", "trien thi doan van dinh doanh"
"tien thi doan van kinh doanh" » "tiep thi doan van kinh doanh", "tien khi doan van kinh doanh", "tren thi doan van kinh doanh", "tien thai doan van kinh doanh", "tien thi hoan van kinh doanh", "tien thi loan van kinh doanh", "tien thi doan va kinh doanh", "tien thi hoang van kinh doanh", "tien thi luan van kinh doanh", "tien thi doan van minh doanh", "tien thi doan 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: (("tien thi doan van kinh doanh") OR ("trien thi doan van kinh doanh"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"tien thi doan van kinh doanh\") OR (\"trien thi doan van kinh doanh\"))".
• Removing quotes may allow a broader search: (( tien thi doan van kinh doanh ) OR ( trien thi doan van kinh doanh )).
• Adding a wildcard symbol may retrieve word variants: (("tien thi doan van kinh doanh") OR ("trien thi doan van kinh doanh"))*.