You can change search engine in Live Start Page extension:
Chrome: https://chrome.google.com/webstore/detail/live-start-page-living-wa/ocggccaacacpienfcgmgcihoombokbbj?hl=en
Firefox: https://addons.mozilla.org/en-US/firefox/addon/live-start-page-lst/
Servicio de atención al cliente por UserEcho
Ideas
You can change search engine in Live Start Page extension:
Chrome: https://chrome.google.com/webstore/detail/live-start-page-living-wa/ocggccaacacpienfcgmgcihoombokbbj?hl=en
Firefox: https://addons.mozilla.org/en-US/firefox/addon/live-start-page-lst/