Hello,
Right now, as we searched for a Product on your Site, the display result is showing the Products accordingly.
And if we search for Blog and click on Search > it displays the certain following page: https://eden-boites.com/blog/devis-en-ligne/ of your Site.
So, could you please elaborate further in this regard what exact issue are you facing in this regard?
Also, for the options related to Search on your Site you can navigate to the Dashboard > Theme Settings > General > Search > there you can find the options related to it: https://xtemos.com/wp-content/uploads/2020/09/search-wd-7.jpg
Best Regards.