This method will tell you to add the manual Search box to search your website. It will look like Google search engine but It will not a Google search engine . You can also search with the navigation box on the top of your blogger site. But if you want to add it in your blogger website just copy and paste the code and add in a page element .
Code for Search Engine:
Do not forget to change this in the above Code:”YOUR BLOG URL/search” with Your Blog address like “http://www.blogdefined.com/search”
NAME OF YOUR BLOG-> Replace this with your Blog Name like OnlineDefined.
Then Save the code in the element.