public function query_args( $args, $request ) {
		global $wpdb;

		// Set post_status.
		if ( 'any' !== $request['status'] ) {
			$args['post_status'] = 'wc-' . $request['status'];
		} else {
			$args['post_status'] = 'any';
		}

		if ( ! empty( $request['customer'] ) ) {
			if ( ! empty( $args['meta_query'] ) ) {
				$args['meta_query'] = array();
			}

			$args['meta_query'][] = array(
				'key'   => '_customer_user',
				'value' => $request['customer'],
				'type'  => 'NUMERIC',
			);
		}

		// Search by product.
		if ( ! empty( $request['product'] ) ) {
			$order_ids = $wpdb->get_col( $wpdb->prepare( "
				SELECT order_id
				FROM {$wpdb->prefix}woocommerce_order_items
				WHERE order_item_id IN ( SELECT order_item_id FROM {$wpdb->prefix}woocommerce_order_itemmeta WHERE meta_key = '_product_id' AND meta_value = %d )
				AND order_item_type = 'line_item'
			 ", $request['product'] ) );

			// Force WP_Query return empty if don't found any order.
			$order_ids = ! empty( $order_ids ) ? $order_ids : array( 0 );

			$args['post__in'] = $order_ids;
		}

		// Search.
		if ( ! empty( $args['s'] ) ) {
			$order_ids = wc_order_search( $args['s'] );

			if ( ! empty( $order_ids ) ) {
				unset( $args['s'] );
				$args['post__in'] = array_merge( $order_ids, array( 0 ) );
			}
		}

		return $args;
	}