Click More actions (...) on the address bar. Click Settings. Scroll down and click View advanced settings. Under Search in the address bar with, select Bing.

Click the three-dot menu icon in the top-right corner of the window and select "Settings" from the context menu. Scroll down to the "Search Engine" section and click the arrow to open the drop-down menu. Choose one of the search engines from the list. From this same area, you can edit the search engines by clicking "Manage Search Engines."