From your articles, it becomes clear quite quickly that the EU, and certainly not the European parliament is not actually at fault here.

Article 1 clearly says that the EU's anti fraud agency doesn't have the power it needs, and that members states refuse to grant it that power.

Article 2 and 3 state clearly that the primary areas where irregularities occur are the structural budgets, over which the European Commision and parliament have no control.

The structural funds, which make up the bulk of the EU budget, are entirely managed by member state or regional authorities without any oversight from the European Commission.

The worst affected area was cohesion spending – funds to develop the infrastructure of poor countries where there was a 5.7 per cent rate of error. The growth budget had a 5.6 per cent error rate, whereas the administration units of the EU had a rate of 0.5 per cent.

Tl'dr : The EU would love to redistribute that money, but memberstates refuse to hand over the controls over those parts of the budget.