How to get search results in SharePoint (Office 365 E3)?

Question

I have a problem with documents and pages search feature. Here's what I've done:

1. Created a trial account of Office 365 E3 based on default .onmicrosoft.com domain name:
   

Office 365 E3
Microsoft Kaizala Pro
Whiteboard (Plan 2)
Information Protection for Office 365 - Standard
Insights by MyAnalytics
To-Do (Plan 2)
Microsoft Forms (Plan E3)
Microsoft Stream for O365 E3 SKU
Microsoft StaffHub
Flow for Office 365
PowerApps for Office 365
Microsoft Teams
Microsoft Planner
Sway
Yammer Enterprise
Azure Rights Management
The latest desktop version of Office
Skype for Business Online (Plan 2)
Office for the web
SharePoint Online (Plan 2)
Exchange Online (Plan 2)

2. Created a communication site and added a couple of word documents, links, web pages.

3. Configured the site as follow:

   Settings
    Site Information
     View all site settings
      Search and Offline Availability
       Allow this site to appear in search results? -> **Yes**
       This site contains fine-grained permissions. Specify the site's ASPX page indexing behavior: -> **Always index all Web Parts on this site**
   
       Reindex site
   

   Documents
    Library Settings
     Advanced Settings
      Allow items from this document library to appear in search results? -> **Yes**
      Allow non-default views from this list to appear in search results? -> **Yes**
   
      Reindex Document Library
   

4. Performed search on the main site's page and on the Documents page with a result:
   We found 0 results for document here or No items match your search

5. I spent a lot of time googling and did not finding a solution. I've also read questions and answers on this resource, but have not find solution that could help.

Could you please help me with this issue?

Answer 1

It didn't work along 5 hours I was playing with it. But when I've finished playing with it, went to bed and returned to it again 11 hours later it turned out working. I don't understand why Reindex Site and Reindex Document Library buttons did not help to reindex site's and library's contents in a half an hour at least, but took so much time.
I've been configuring also

 SharePoint admin center
  Search
   Authoritative pages
   Search Center Settings

 SharePoint
  Site Settings
   Site Features
    SharePoint Server Standard Site features -> Active
   Regional Settings
    Time Zone -> UTC+02:00

But unsure it helped. Maybe crawl schedule plays the role.