Perhaps you should try some spelling variations:
"phap trien so kien." » "pha trien so kien." (Expand Search), "phan trien so kien." (Expand Search), "phap tien so kien." (Expand Search), "phap trien o kien." (Expand Search), "phap trien su kien." (Expand Search), "phap trien so hien." (Expand Search), "phap trien so bien." (Expand Search)
"phat trien san kien." » "phat trien ben kien." (Expand Search), "phat trien va kien." (Expand Search), "phat trien cac kien." (Expand Search), "phat trien su kien." (Expand Search)
"phat trien van kien." » "phat trien ben kien." (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 san kien.") OR ("phat trien van kien."))) OR ("phap trien so kien."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"phat trien san kien.\") OR (\"phat trien van kien.\"))) OR (\"phap trien so kien.\"))".
• Removing quotes may allow a broader search: (((( phat trien san kien. ) OR ( phat trien van kien. ))) OR ( phap trien so kien. )).
• Adding a wildcard symbol may retrieve word variants: (((("phat trien san kien.") OR ("phat trien van kien."))) OR ("phap trien so kien."))*.