duongtd1102 on "[Plugin: Google Rich Snippets Wordpress Plugin] how to use this plugin"

i insert sort code in this post http://hotelshanoi.org/visit-halong-bay/ but nothing on google when i search that
i use short code :[rating itemreviewed="post" rating="5" reviewer="Duong" dtreviewed="bee" summary="intereseting infomation" worst="0" best="5"][/rating]
but nothing change
please help me

http://wordpress.org/extend/plugins/google-rich-snippets/