If you are wondering why the Search and Offline Availability options are unavailable in the SharePoint Online admin center, we have a workaround to access the configuration.
Here is the Settings page of the SharePoint Online Admin Center.
https://TENANTNAME.sharepoint.com/_layouts/15/settings.aspx
So, you can see that the Search and Offline availability options are missing here on this page.
In such scenarios, don't panic. We do have a link which can be used to access the configuration.
https://TENANTNAME.sharepoint.com/_layouts/15/srchvis.aspx
Hope it helps.
Sharing is caring!!