sharepoint online – How to configure all fields in a list to be searchable?

On SharePoint Online, I create a list with multiple fields, including Title and Description. I am quite impressive that the Title become almost immediately searchable thru the search box at the top (screen below). However the description field is not searchable.

I believe I am using a modern view page. If the searchbox is not configurable, could I create a search for this list only (in classic view, all list come with a search box).

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