The webapp provides for each item the link on ECB's website.
Speeches for : Peter Praet where "buy" appeared
2017-05-11 : Interview with Peter Praet for Trends/Tendances2016-05-23 : Interview with Público
2016-01-30 : Interview with NRC Handelsblad
2015-02-16 : Interview with Jornal de Negócios
2014-12-31 : Interview with Börsen-Zeitung
2014-12-19 : Is the ECB doing enough?
2014-07-15 : Interview with Les Echos