The webapp provides for each item the link on ECB's website.
Speeches for : Vitor Constancio where "dollar" appeared
2018-05-18 : Interview with Bloomberg TV2015-10-15 : Divergent monetary policies and the world economy
2011-11-23 : The Future of the International Monetary System
2011-05-05 : Introductory statement to the press conference (with Q&A)