The webapp provides for each item the link on ECB's website.
Speeches for : Mario Draghi where "buffers" appeared
2019-10-18 : IMFC Statement2019-04-12 : IMFC Statement
2018-09-18 : The Benefits of European Supervision
2015-09-23 : President's introductory remarks at the regular ECON hearing
2013-12-10 : Money and monetary institutions after the crisis