Villas-Boas said: "They were two completely different halves. The first 20 minutes of the second half we were good and it was a question of patience until we found the goal.
"We could maybe have tried to go for the second goal but we decided to try to hold onto the first and exploit the space in behind. But we conceded two minutes from the end.
"That is disappointing and prevented us from getting the three points that we had expected. It's a pity but the players fought hard and I think confidence is not affected."