Modifying Google newsfeed url..

[sollekram]

Hello!
So i have this link bellow so i can get the latest news appeard in the magic mirror.
But i dont know how to modify it so i can get the latest news on this subject/section.
Note: this is a news link from google news(with the section i like).
But they appeard in wrong days.
Should i change something in the url or in the newsfeed module?
https://news.google.com/news/rss/search/section/q/Επιστήμη+και+τεχνολογία?ned=el_gr&gl=GR&hl=el