Document columns not showing up as crawled properties in Search service application.

Hi All,
 
I have created some columns like "Document No","Document Summary" etc..
 
I am trying to map these columns through "New Managed Property" but the document properties are not coming up in Crawled Properties.
 
Some blog saying you have to add some sample documents then try full crawl to get in Crawled Properties I did that but no luck...
 
I want to use these document properties in my Full text query after Mapping
 
Please suggest me the solution.
 
Thanks in advanced for help.
 
Ajit