Multi site search

I use wordpress multi site.
In root blog(blog id =1)
Search every blog item by search form in root blog.

Please tips for implementation

Hi

We didn’t made any testes whits multi-site search and the theme don’t have a feature which can perform this action. You ca try a plugin with a specific functionality but we can’t make any recommendation in this regard as we didn’t test with theme and we can’t say how they will work with the theme. Also you can try a custom code to achieve that. Here you can find some useful information in this regard: http://rudrastyh.com/wordpress/search-across-wp-multisite.html

Thinks!