The webapp provides for each item the link on ECB's website.
Speeches for : Luis de Guindos where "signal" appeared
2022-09-16 : Interview with Expresso2022-07-21 : PRESS CONFERENCE
2020-04-12 : Interview with La Vanguardia
2020-03-02 : Remarks at the European Economics and Financial Centre
2019-08-27 : Communication, expectations and monetary policy