The webapp provides for each item the link on ECB's website.
Speeches for : Peter Praet where "amount" appeared
2017-10-11 : Maintaining price stability with unconventional monetary policy measures2017-10-02 : Maintaining price stability with unconventional monetary policy measures
2016-11-14 : Long-run saving and monetary policy
2015-12-10 : Interview with Handelsblatt