The webapp provides for each item the link on ECB's website.
Speeches for : Isabel Schnabel where "substantial" appeared
2022-02-15 : Interview with Financial Times2021-09-15 : The monetary policy non-puzzle in bond markets
2021-05-28 : Interview with Reuters
2020-09-28 : Women are central, not just in central banks
2020-05-27 : Interview with Financial Times
2020-04-16 : The ECB’s response to the COVID-19 pandemic