Cannot see theme in my search

Themes (and plugins for that matter) in the wordpress respitory are uploaded to wordpress.org by their respective authors. These themes and plugins are not written or updated or maintainted by the WordPress team who are responsible for WordPress core.

These plugin and theme authors are normal members of the public like you and me. It is their responsibilty to keep their plugins and themes up to date etc.

What you are experiencing are most probably that the theme authour has created this version of his theme only for wordpress.com hosted sites and not for self hosted sites, and it will not be at all made available to self hosted sites. You have to remember, wordpress.com has its own respitory diffirent from wordpress.org

You will need to contact the author for any further details regarding this matter