The Google Navigation bar at the top of your Blogger blogs has an embedded search box. However, you may want to include a similar box in the main body of your blog, or the sidebar. Other than the convenience for users, the added advantage is that unlike Google search box, the search results of this Blogger.com search box appear in the main body of your Blog.
Please Note: The Simple Way To Add A Google Search Box is,
Logon to : http://draft.blogger.com (not the simple blogger.com)
Loginto your blog. And Choose Layout And Click Add A Gadget
And Choose Search Box
The Result Will be as in the below screen shot.
