1. Go Dashboard - Template - Edit Html
2. Paste this code Above </head>
<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: 1.2em;
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'/>
//Script by Aneesh of www.bloggerplugins.org
//Released on August 19th August 2009
var relatedTitles = new Array();
var relatedTitlesNum = 0;
var relatedUrls = new Array();
var thumburl = new Array();
function related_results_labels_thumbs(json) {
for (var i = 0; i < json.feed.entry.length; i++) {
var entry = json.feed.entry[i];
relatedTitles[relatedTitlesNum] = entry.title.$t;
try
{thumburl[relatedTitlesNum]=entry.media$thumbnail.url;}
catch (error){
s=entry.content.$t;a=s.indexOf("<img");b=s.indexOf("src=\"",a);c=s.indexOf("\"",b+5);d=s.substr(b+5,c-b-5);if((a!=-1)&&(b!=-1)&&(c!=-1)&&(d!="")){
thumburl[relatedTitlesNum]=d;} else thumburl[relatedTitlesNum]='https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgRjtD2NxJ35aGXUUB1ZrfXCoWKK0hEVVHOJyKa2uREhUrwAsayoMMz0RWCbx3BBTX5-1BfcHjtrTy_oIUxVmpaflvmYqryGq2OBfTxM_mA4o4am3j4pwCO0pglzVf1Pkf6FyBxnegHjJY/s400/noimage.png';
}
if(relatedTitles[relatedTitlesNum].length>35) relatedTitles[relatedTitlesNum]=relatedTitles[relatedTitlesNum].substring(0, 35)+"...";
for (var k = 0; k < entry.link.length; k++) {
if (entry.link[k].rel == 'alternate') {
relatedUrls[relatedTitlesNum] = entry.link[k].href;
relatedTitlesNum++;
}
}
}
}
function removeRelatedDuplicates_thumbs() {
var tmp = new Array(0);
var tmp2 = new Array(0);
var tmp3 = new Array(0);
for(var i = 0; i < relatedUrls.length; i++) {
if(!contains_thumbs(tmp, relatedUrls[i]))
{
tmp.length += 1;
tmp[tmp.length - 1] = relatedUrls[i];
tmp2.length += 1;
tmp3.length += 1;
tmp2[tmp2.length - 1] = relatedTitles[i];
tmp3[tmp3.length - 1] = thumburl[i];
}
}
relatedTitles = tmp2;
relatedUrls = tmp;
thumburl=tmp3;
}
function contains_thumbs(a, e) {
for(var j = 0; j < a.length; j++) if (a[j]==e) return true;
return false;
}
function printRelatedLabels_thumbs() {
for(var i = 0; i < relatedUrls.length; i++)
{
if((relatedUrls[i]==currentposturl)||(!(relatedTitles[i])))
{
relatedUrls.splice(i,1);
relatedTitles.splice(i,1);
thumburl.splice(i,1);
}
}
var r = Math.floor((relatedTitles.length - 1) * Math.random());
var i = 0;
if(relatedTitles.length>0) document.write('<h2>'+relatedpoststitle+'</h2>');
document.write('<div style="clear: both;"/>');
while (i < relatedTitles.length && i < 20 && i<maxresults) {
document.write('<a style="text-decoration:none;padding:5px;float:left;');
if(i!=0) document.write('border-left:solid 0.5px #d4eaf2;"');
else document.write('"');
document.write(' href="' + relatedUrls[r] + '"><img style="width:72px;height:72px;border:0px;" src="'+thumburl[r]+'"/><br/><div style="width:72px;padding-left:3px;height:65px;border: 0pt none ; margin: 3px 0pt 0pt; padding: 0pt; font-style: normal; font-variant: normal; font-weight: normal; font-size: 12px; line-height: normal; font-size-adjust: none; font-stretch: normal;">'+relatedTitles[r]+'</div></a>');
if (r < relatedTitles.length - 1) {
r++;
} else {
r = 0;
}
i++;
}
document.write('</div>');
}
</script>
</b:if>
3. Paste this code on <body> , place where you like or
Paste the code below
<div class='post-footer-line post-footer-line-3'>
<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>
<b:if cond='data:blog.pageType == "item"'>
<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:if></b:loop><a href='http://www.omseoli.com' style='display:none;'>Related Posts with thumbnails for blogger</a><a href='http://www.bloggerplugins.org/' style='display:none;'>blogger widgets</a>
<script type='text/javascript'>
var currentposturl="<data:post.url/>";
var maxresults=6;
var relatedpoststitle="Related Post With Thumbnail";
removeRelatedDuplicates_thumbs();
printRelatedLabels_thumbs();
</script>
</div><div style='clear:both'/>
</b:if>
DEMO : see below
