The webapp provides for each item the link on ECB's website.
Speeches for : Peter Praet where "nous" appeared
2019-05-31 : Entretien avec L‘Echo2017-10-11 : Maintaining price stability with unconventional monetary policy measures
2017-10-02 : Maintaining price stability with unconventional monetary policy measures
2013-09-16 : Entretien avec Les Echos