Edit code for seo title

Step 1: Go to Template select Edit HTML.
Step 2: Find

 <title><data:blog.pageTitle/></title>

Step 3: Replace with

<b:if cond='data:blog.pageType == &quot;item&quot;'>
<title><data:blog.pageName/> | <data:blog.title/></title>
<b:else/>
<title><data:blog.pageTitle/></title> </b:if>

Step 4: Views result :D