Source

File: wp-admin/includes/class-wp-posts-list-table.php

public function no_items() {
		if ( isset( $_REQUEST['post_status'] ) && 'trash' === $_REQUEST['post_status'] ) {
			echo get_post_type_object( $this->screen->post_type )->labels->not_found_in_trash;
		} else {
			echo get_post_type_object( $this->screen->post_type )->labels->not_found;
		}
	}