Change Search preferences in Safari on Mac
In the Safari app on your Mac, use Search preferences to change how you search the web and how search results are presented. To change these preferences, choose Safari > Preferences, then click Search.
Click the pop-up menu, then choose the search engine you want Safari to use for web searches.
Include search engine suggestions
Ask the search engine for search suggestions based on search terms you enter. The search engine may record your search terms.
Include Safari Suggestions
Get Safari Suggestions as you type in the Smart Search field. Safari search includes suggestions from the Internet, iTunes, the App Store, movie showtimes, locations nearby, and more. To learn more, choose Apple menu > System Preferences, click Spotlight, then click About Search & Privacy.
Enable Quick Website Search
Record information about your searches within a website to expedite later searches on that site. You can then search within that website by entering the name of the site, followed by your search term, in the Smart Search field.
Click Manage Websites to see or remove websites for which Safari recorded Quick Website Search information.
Preload Top Hit in the background
Start to load a webpage as soon as it’s determined to be a top search hit based on your bookmarks and browsing history.
Show your favorite websites below the Smart Search field when you click in the field while viewing a webpage.