The webapp provides for each item the link on ECB's website.
Speeches for : Luis de Guindos where "collateral" appeared
2022-11-04 : The euro area economy and the energy transition2022-10-27 : PRESS CONFERENCE
2020-04-30 : PRESS CONFERENCE
2020-04-22 : Improving funding conditions for the real economy during the COVID-19 crisis: the ECB’s collateral easing measures