**YITH WooCommerce Point of Sale** - Snippet to change the max number of products for search

functions.php

<?php

add_filter( 'woocommerce_rest_product_object_query', 'yith_pos_extend_post_per_pages', 5, 2 );

function yith_pos_extend_post_per_pages( $args, $request ){
	if ( isset( $_GET[ 'queryName' ] ) && 'yith_pos_search' === $_GET[ 'queryName' ]  ) {
		$args[ 'posts_per_page' ] = 20;
	}

	return $args;
}