When adding this codes you have to be more careful not to place it in the wrong place, just follow this steps below and your blog will be on the first or second page of google search.
Login to your blogger account and the select your blog that you want to prote protect from your dashboard.
Now on you admin control panel scroll your mouse down to the template tab and click on it.
On your template page just click on edit html.
On the html code click on CTRL+F and search for this code below
Now paste this code below before this </head> line
An that all keep rocking , don’t forget to drop Your comment below thanks.