Arjen Robben netted after a poor clearance by goalkeeper David Ospina in the 68th minute .
Douglas Costa added another in the 78th before Arturo Vidal scored twice in the space of five minutes .
Arjen Robben netted after a poor clearance by goalkeeper David Ospina in the 68th minute , and Douglas Costa added another in the 78th before Arturo Vidal scored twice in the space of five minutes .