como filtrar registros multiples

filters.vue

computed: {
                filtered_list(){

                    if (!this.filter){
                        return this.proveedores;
                    }

                    function filter01(item, filter){
                        return item.razon_social?.toString().toLowerCase().includes(filter);
                    }
                    function filter02(item, filter){
                        return item.ruc?.toString().toLowerCase().includes(filter)
                    }

                    return this.proveedores.filter(item => {
                        return filter01(item, this.filter) || filter02(item, this.filter)
                    });
                }
            },