Netherlands manager Louis van Gaal feels that his side produced their best display under his tenure in their 4-0 win over Romania.

A brace from Robin van Persie and strikes from Rafael van der Vaart and Jeremain Lens secured the win for Van Gaal's side as they maintained their 100% record in qualifying.

"Van Persie was very unlucky in the first half but in the second half he was actually very happy, because he made an incredible world-class goal," Van Gaal told Voetbal International.

"He was also a great target man, as you saw in his first goal. And Van der Vaart put his shot in flawlessly. Lens was [also] involved in two goals. And I haven't even talked about the defensive organisation.

"I thought it was the best match [the team has played] in this period under me."

Netherlands are top of Group D and are seven points clear of Hungary in second place, with four qualifying games remaining.