The webapp provides for each item the link on ECB's website.
Speeches for : Mario Draghi where "purchased" appeared
2017-11-20 : Hearing of the Committee on Economic and Monetary Affairs of the European Parliament2017-09-25 : Hearing of the Committee on Economic and Monetary Affairs of the European Parliament
2015-12-03 : Introductory statement to the press conference (with Q&A)