so then i type this keyword "How To Add Related Posts Widget To Blogger with Thumbnails " on google and i found this. . .
How To Add Related Posts Widget To Blogger with Thumbnails?
Step 1. Go To Blogger Dashboard >>Design >>Edit HTML;Step 2. Check the "Expand widgets template" box;
Step 3. Search (CTRL + F) for this piece of code:
</head>
Step 4. Copy and paste the below code just before/above </head>:
<!--Related Posts with thumbnails Scripts and Styles Start-->
<!-- remove --><b:if cond='data:blog.pageType == "item"'>
<style type="text/css">
#related-posts {
float:center;
text-transform:none;
height:100%;
min-height:100%;
padding-top:5px;
padding-left:5px;
}
#related-posts h2{
font-size: 1.6em;
font-weight: bold;
color: black;
font-family: Georgia, “Times New Roman”, Times, serif;
margin-bottom: 0.75em;
margin-top: 0em;
padding-top: 0em;
}
#related-posts a{
color:black;
}
#related-posts a:hover{
color:black;
}
#related-posts a:hover {
background-color:#d4eaf2;
}
</style>
<script type='text/javascript'>
var defaultnoimage="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjSrbzjEYt0nL1_bCUvDq95wf237a_qU1eenHSzOtdn_GKjYPLuB_JQjh-I_ZpXRvQ66qBtzB4RsUP4_zxnMkCnG9qhv8Co2EpbN9RLUrE0FC_dPQd4jLjvVBQxGtHbKFDDcFlltEl94kQ2/s1600/noimage.png";
var maxresults=5;
var splittercolor="#d4eaf2";
var relatedpoststitle="Related Posts";
</script>
<script src='http://helplogger.googlecode.com/svn/trunk/related-posts-with-thumbnails-for-blogger.js' type='text/javascript'/>
<!-- remove --></b:if>
<!--Related Posts with thumbnails Scripts and Styles End-->
Note:
-to change the default picture when no images are available, replace the URL in blue with your own.
-for displaying more than 5 posts, replace 5 value from "var maxresults=5;"
-remove the code in violet if you want the related posts to be displayed in homepage too
Step 5. Now find the following code:
<div class='post-footer-line post-footer-line-1'>
If you can't find it, then search for this one:
<p class='post-footer-line post-footer-line-1'>
OR:
<data:post.body/>
Step 6. Copy and paste the below code just after any of these lines
<!-- Related Posts with Thumbnails Code Start-->
<!-- remove --><b:if cond='data:blog.pageType == "item"'>
<div id='related-posts'>
<b:loop values='data:post.labels' var='label'>
<b:if cond='data:label.isLast != "true"'>
</b:if>
<script expr:src='"/feeds/posts/default/-/" + data:label.name + "?alt=json-in-script&callback=related_results_labels_thumbs&max-results=6"' type='text/javascript'/></b:loop>
<script type='text/javascript'>
removeRelatedDuplicates_thumbs();
printRelatedLabels_thumbs("<data:post.url/>");
</script>
</div><div style='clear:both'/>
<!-- remove --></b:if>
<b:if cond='data:blog.url == data:blog.homepageUrl'><b:if cond='data:post.isFirstPost'>
<a href='http://helplogger.blogspot.com'><img alt='Best Blogger Tips' src='https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgLjxzsLt1Ff3bsWi5vIqsCLk51y8VX-q-dZf3ANmXuUHYm_a9RpJzA0j9wLmAUDPwTuS-Hp6k_nsZSEX90rM-I8lzE8Eix8II3SXQVcSpvw0xJW6b535cWY0Yxi3PlmZ3dbjsemAI4yYnj/s1600/best+blogger+tips.png'/></a>
</b:if></b:if>
<!-- Related Posts with Thumbnails Code End-->
Note: - change the 6 value from max-results=6 with the number of posts you want to be displayed.
- If you want the related posts to be displayed on homepage too, remove the code in violet.
Step 7. Save the Template
That's it!! it works for me, Hope it works for U!