[Plugin: Smart Manager for WP e-Commerce] Search for grouped products

Hello,
I would like to ask to include the feature to search for a specific group of Products, now I’m just able to search for the name oder something what is inside the description, but I want to list just one group of products. How can I do that, I’ve got over 1600 products, so just sorting is not what I’m looking for.

Thanks

http://wordpress.org/extend/plugins/smart-manager-for-wp-e-commerce/