The webapp provides for each item the link on ECB's website.
Speeches for : Mario Draghi where "nature" appeared
2017-05-04 : The Monnet method: its relevance for Europe then and now2016-06-28 : The International Dimension of Monetary Policy
2016-06-09 : On the importance of policy alignment to fulfil our economic potential
2015-10-01 : Atlantic Council Remarks
2015-09-23 : President's introductory remarks at the regular ECON hearing