No results found for "Canada". Try a new search. But results display in the preview.

I am trying to implement an out-of-the-box site search but there are no results displaying on the search results page.

The preview box shows the results:

This is the site: https://www.value.snomed.org/home

Really appreciate it if anyone has any ideas.

Thanks so much!

What have been done already?
What is your SETUP ?
Are you able to provide, what you already have done?

You are in the CODE-SECTION —> DID YOU USE SOME CODE ?