Best bets (promoted results)
The typeahead search box also supports best bets that allows you to specify a search result for a key word. This capability is based on the SharePoint Query Rules capability with promoted results as documented at https://docs.microsoft.com/en-us/sharepoint/manage-query-rules
Any promoted result that is defined as part of the result source for the search vertical appears at the top of the result in a high lighted format.
Best bet promoted result