To hide a specific page from search engines:

1. From the left side of the editor, click the page icon to open Pages.
2. From Pages, next to the page you'd like to hide, click the settings icon.
3. From Settings and SEO, checkmark the box next to Hide page from search results.

4. Click Done.

To activate these changes, you will need to click Publish from the top right of the editor.

Note that whenever you make changes and publish your site, these changes need to be crawled again by search engines (such as Google) before they appear in search results. If the pages have already been indexed, you will need to wait for search engines to update their database before the pages are removed.