Help with exact match search query string

Hello, I try to import articles who have the expression "immobilier à Paris" in its content. For this, I do : 1- Custom news to post, 2- Setting/search query string/ : "immobilier à Paris" Then I open the source article that are fetched, I do F3, then I entrer "immobilier à Paris", but I don't find this expresion in the content. And indeed, the content doesn't match with what I am looking for, please check VDO screen here : https://www.screencast.com/t/2YpCYYYqrH. What did I do wrong ?   Thanks :).