Thomas Frank’s side have now won just one game in their last seven across all competitions following their defeat to Aston Villa.
Spurs were 2-0 down heading into half-time, but despite a valiant second half performance, were unable to complete the comeback.
The two sets of players were involved in a slight fracas after the game, and defender Van de Ven, 24, has defended their actions.
Van de Ven told reporters: "I think it's good passion. But we shouldn't be bringing this passion only when we are behind. If we start a game like this, it will be a whole different game.
“We were nowhere near in the first half like what we did in the second. We need to do this for the full 90 minutes.
“Then we will be a totally different team. We need to do it from the first minute and that is the problem at the moment.
"We have had too many ups and downs. We have too many games that we play at a good level and then there are games where we are way below our level. That's what we need to work on and be more consistent."