Some Bloggers want to change their Blog Title according to their Posts. With this little trick, they can change their Blog Title to the same of their Blog Post Title.
Follow these instructions:
Sign in to Blogger and Go to Dashboard
Select Layout Option then Edit HTMLReplace
<data:blog.pagetitle/>with <data:blog.pageName/> <data:blog.pageTitle/>
After replacing, save it and view your Blog, It’s Done.