Alexandru Vornicescu

If you want to exclude some post types or terms from the search page then this plugin is for you.

Filter Search Page

This plugin will help you to filter the search page results by category and post type.

digitalzoomstudio

This plugin creates a custom wp_query via a shortcode. Accepts any parameter of WP_Query – https://codex.wordpress.org/Class_Reference/WP_Query
Demo here – http://digitalzoomstudio.net/developer-freebies/
My premium plugins – http://bit.ly/nM4R6u

DZS Custom WP Query Shortcode

This plugin creates a custom wp_query via a shortcode. Accepts any parameter of WP_Query

Filter Search Page vs DZS Custom WP Query Shortcode