Perhaps you should try some spelling variations:
"chuuong trinh đao tao." » "chuong trinh đao tao." (Expand Search), "chuong tinh đao tao." (Expand Search), "cong trinh đao tao." (Expand Search)
"phuong trinh đao tao." » "chuong trinh đao tao." (Expand Search), "phuong tinh đao tao." (Expand Search), "phuong thanh đao tao." (Expand Search)
"phuong thinh đao tao." » "phuong thanh đao tao." (Expand Search), "phuong chinh đao tao." (Expand Search), "phuong tinh đao tao." (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: (((("phuong trinh đao tao.") OR ("chuuong trinh đao tao."))) OR ("phuong thinh đao tao."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"phuong trinh đao tao.\") OR (\"chuuong trinh đao tao.\"))) OR (\"phuong thinh đao tao.\"))".
• Removing quotes may allow a broader search: (((( phuong trinh đao tao. ) OR ( chuuong trinh đao tao. ))) OR ( phuong thinh đao tao. )).
• Adding a wildcard symbol may retrieve word variants: (((("phuong trinh đao tao.") OR ("chuuong trinh đao tao."))) OR ("phuong thinh đao tao."))*.