Perhaps you should try some spelling variations:
"phat trien van khieu cua van thanh." » "phat trien ben khieu cua van thanh." (Expand Search), "phat trien van kieu cua van thanh." (Expand Search), "phat trien van hieu cua van thanh." (Expand Search), "phat trien van chieu cua van thanh." (Expand Search), "phat trien van thieu cua van thanh." (Expand Search), "phat trien van khieu cua ban thanh." (Expand Search), "phat trien van khieu cua van thang." (Expand Search), "phat trien van khieu cua tran thanh." (Expand Search), "phat trien van khieu cua dan thanh." (Expand Search), "phat trien van khieu cua dang thanh." (Expand Search)
"phat trien van khieu cua ban thao." » "phat trien ben khieu cua ban thao." (Expand Search), "phat trien van kieu cua ban thao." (Expand Search), "phat trien van hieu cua ban thao." (Expand Search), "phat trien van chieu cua ban thao." (Expand Search), "phat trien van thieu cua ban thao." (Expand Search), "phat trien van khieu cua van thao." (Expand Search), "phat trien van khieu cua ban thanh." (Expand Search), "phat trien van khieu cua soan thao." (Expand Search), "phat trien van khieu cua bao thao." (Expand Search), "phat trien van khieu cua dan thao." (Expand Search), "phat trien van khieu cua can thao." (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 van khieu cua van thanh.") OR ("phat trien van khieu cua ban thao."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"phat trien van khieu cua van thanh.\") OR (\"phat trien van khieu cua ban thao.\"))".
• Removing quotes may allow a broader search: (( phat trien van khieu cua van thanh. ) OR ( phat trien van khieu cua ban thao. )).
• Adding a wildcard symbol may retrieve word variants: (("phat trien van khieu cua van thanh.") OR ("phat trien van khieu cua ban thao."))*.