The string you provided looks like a Google Dork —a specialized search query used to find specific data indexed on the web. This particular query is designed to find lists of Yahoo email addresses while specifically excluding common competitors and focusing on 2023 data. Breakdown of Your Search Query
if you need:
Some marketers use advanced operators to find niche directories or contact lists that haven't been "burnt out" by mass mailing. yahoo.com -gmail.com -hotmail.com Txt 2023 -