I get the following page when I search in Chrome or Edge.
https://ca.search.yahoo.com/?fr=hp-ddc-bd-tab&type=dc-bcr-is-rhb-36__alt__ddc_dsssyctab_bd_com
Brief Introduction of Http://search.yahoo.com/?fr=hp-ddc-bd-tab&type=dc-bir-sw-rhb-36__alt__ddc_dsssyctab_bd_com
Before learning this redirect, you should know that the real Yahoo will not redirect you to a site that looks so doubtful. So there might be something unwanted or even malicious (such as adware, a potentially unwanted program or even malware) in your computer that cause this redirect. Please make sure whether you have done the following things: