Perhaps you should try some spelling variations:
"phat trien danh kien." » "phat trien dan kien." (Expand Search), "phat tien danh kien." (Expand Search), "phat truyen danh kien." (Expand Search), "phat trien dinh kien." (Expand Search), "phat trien hanh kien." (Expand Search), "phat trien danh tien." (Expand Search)
"phat trien manh kien." » "phat tren manh kien." (Expand Search), "phat tien manh kien." (Expand Search), "phat trien mang kien." (Expand Search), "phat trien hanh kien." (Expand Search), "phat trien manh tien." (Expand Search), "phat trien dinh kien." (Expand Search)
"phat trien doanh dien." » "phat trien doanh hien." (Expand Search), "phat trien danh dien." (Expand Search), "phat trien doanh tieng." (Expand Search)

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: (((("phat trien danh kien.") OR ("phat trien manh kien."))) OR ("phat trien doanh dien."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"phat trien danh kien.\") OR (\"phat trien manh kien.\"))) OR (\"phat trien doanh dien.\"))".
• Removing quotes may allow a broader search: (((( phat trien danh kien. ) OR ( phat trien manh kien. ))) OR ( phat trien doanh dien. )).
• Adding a wildcard symbol may retrieve word variants: (((("phat trien danh kien.") OR ("phat trien manh kien."))) OR ("phat trien doanh dien."))*.