<?php //MAKE SURE TO REMOVE THIS WHOLE LINE FIRST
add_filter( 'gravityview/template/text/no_entries', 'modify_gravityview_no_entries_text', 10, 3 );
function modify_gravityview_no_entries_text( $existing_text, $is_search = false, $context = null ) {
    $view_id = $context->view->ID;
    if($view_id == 8) //Change this number to your View ID
    {
        if( $is_search ) {
            $return = 'Your search came up empty! [Use your own new search text]';
        } else {
            $return = "There just aren't any results! [Use your own text]";
        }
    }
    //You can repeat this section for another View
    elseif($view_id == 9) //Change this number to your View ID
    {
        if( $is_search ) {
            $return = 'Your search came up empty! [Use your own new search text]';
        } else {
            $return = "There just aren't any results! [Use your own text]";
        }
    }
    // End of repeatable block


    //If you have more than 2 View where you want to use the code, Please copy and paste the repeatable block before this comment, and remember to update the View ID

    else{
        return;
    }
    return $return;
}