The webapp provides for each item the link on ECB's website.
Speeches for : Vitor Constancio where "behaviour" appeared
2017-09-25 : Developing models for policy analysis in central banks2017-09-22 : Understanding and overcoming low inflation
2017-04-06 : Effectiveness of Monetary Union and the Capital Markets Union
2016-06-21 : Introductory remarks at the fifth ECB conference on accounting, financial reporting and corporate governance for central banks