Whenever you make changes to the view and sort settings of windows explorer, the custom changes are marked for that folder such that your view will remain the same way when you reopen the same folder. The same thing happens when you search for a certain key word within a certain folder. If you decide to change the default view of the search results, the results will always be displayed this way the next time you search in the same folder.
Read More at: https://appuals.com/customize-default-search-views-windows-10/