Adding this meta tag into the head section of your webpage, it will hide that page from search engine results. Add it just after the <head> tag.
<meta name='robots' content='noindex,nofollow'/>
If you are using Blogger, go to "Edit HTML" to add the above code.
Note: Adding above meta tag into your Blogger blog, it will hide your entire blog from search engines.
If you only want to hide one Blogger page (for example: Advertise page), add it like this:
<b:if cond='data:blog.url == data:blog.canonicalHomepageUrl + "p/advertise.html"'>
<meta name='robots' content='noindex,nofollow'/>
</b:if>