Using Classic Outlook on Windows for personal email, calendar, and contact management
Hi Frank,
If the "top results" you mentioned means that the search results have started to show three items on the top of the list in Office 365 OWA (just like the screenshot below). There is no way to disable it. It is recommended that you submit feedback to Microsoft. Our products will be improved based on customer's feedback.
Thanks for your understanding and cooperation,
Edward