In Italy, there are several cities called Trino. There are three airports in Milan. If the Malpensa airport and the required city of Trino Vercellese are on their way to Turin, then you should get there first: on the Malpensa expressway to the Milano Centrale railway station, then by train in the direction of Turin to Vercelli station. From Vercelli station to Trino, about 15 km by taxi.