Perhaps you should try some spelling variations:
"phap trien khai dien." » "phat trien khai dien." (Expand Search), "phan trien khai dien." (Expand Search), "phap tien khai dien." (Expand Search), "phap trien khau dien." (Expand Search), "phap trien khi dien." (Expand Search), "phap trien thai dien." (Expand Search)
"pha trien nhan dien." » "pha trien san dien." (Expand Search), "phat trien nhan dien." (Expand Search), "phan trien nhan dien." (Expand Search), "pha tren nhan dien." (Expand Search), "pha trien nhan dan." (Expand Search)
"pha trien van dien." » "phat trien van dien." (Expand Search), "phan trien van dien." (Expand Search), "pha tren van dien." (Expand Search), "pha trien ben dien." (Expand Search), "pha trien van kien." (Expand Search), "pha trien van hien." (Expand Search), "pha trien van tien." (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: (("phap trien khai dien.") OR ((("pha trien nhan dien.") OR ("pha trien van dien."))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"phap trien khai dien.\") OR (((\"pha trien nhan dien.\") OR (\"pha trien van dien.\"))))".
• Removing quotes may allow a broader search: (( phap trien khai dien. ) OR ((( pha trien nhan dien. ) OR ( pha trien van dien. )))).
• Adding a wildcard symbol may retrieve word variants: (("phap trien khai dien.") OR ((("pha trien nhan dien.") OR ("pha trien van dien."))))*.