WordPress: exclude custom post-types from search query results. Note: 'video-camera', 'software-solution','post' are the post types which you want to search replace with you own. Source: http://wordpress.org/support/topic/exclude-custom-post-types-from-search-query-results?replies=6#post-3249786

functions.php

// search filter
function fb_search_filter($query) {
  if ( !$query->is_admin && $query->is_search) {
    $query->set('post_type', array('video-camera', 'software-solution','post') ); // id of page or post
  }
  return $query;
}
add_filter( 'pre_get_posts', 'fb_search_filter' );