The webapp provides for each item the link on ECB's website.
Speeches for : Peter Praet where "qe" appeared
2019-03-12 : Q&A on Twitter2015-03-25 : Interview with Il Sole 24 Ore
2015-02-16 : Interview with Jornal de Negócios
2015-02-05 : Interview with Les Echos
2014-07-15 : Interview with Les Echos