How to add custom text or google ads after site name in wordpress thesis theme.We can use these hook for do this.Open the custom_functions.php in the thesis theme folder.Add the following function end of the file and save it.
File path – /wp-content/themes/thesis/custom/custom_functions.php

This function is keep the custom code.But still not displaying.

How to add Google adsense code after site name

If you want to add google ad code here, do it as follows.

How to Call to this function

Full script is here.

Also you can try to thesis_hook_before_title instead of thesis_hook_after_title.