Remove Page from Website's Search Results

Hello,

How do I set certain pages to not show up when they match any criteria in the website’s search Icon Function. I understand that making the page private will remove it from search, but I still want users to be able to access the page – just not find it when they use the search icon to search the website.

I have already used Yoast Plug-in settings to set it to “No Follow”,”No Index” but this did not work for the website’s search funtion.

Thank you