Our content with the same title separate into six posts in different six catagories , one member controll the all posts of his own category, but they want the visitor to show the result of searching by one title ( not six post with the same title , but not the same category), and when they click one post , will lead to a page to show the six post of the same title in one page , and separate each post into indepedent div block in that page.

how should i do with the atahualpa theme with less effort ??

Have you got this working with another theme?
I think you are going to have to do some custom coding. Wordpress uses the post title as the link to a post, not the content