The webapp provides for each item the link on ECB's website.
Speeches for : Mario Draghi where "taxes" appeared
2015-10-11 : Interview with Kathimerini2015-01-02 : Interview with Handelsblatt
2013-05-02 : Introductory statement to the press conference (with Q&A)
2012-05-03 : Introductory statement to the press conference (with Q&A)