Target keywords and Analyze my content

Hi,

on the post’s box,
you have a “Target keywords field” and “Analyze my content” button,
after i click “Analyze my content”,
where can i find the Analyzing result ?

because i choose a word from my content’s heading,click save,and click “Analyze my content” button,

but at bwlowing “Optimizations” tab,
i can not find any result as my typing.

thanks