If you have an account in google webmaster tool you can add sitemap there by adding atom.xml to your domain name. Your sitemap URL should be like this http://domain.blogspot.com/atom.xml
Thanks so much. I will try to use this tool. It means I submit the url to Google by "atom.xml" instead of "sitemap.xml". Is it right?
There si a little problem with that because you can only submit max 250 or less posts, if i am not mistaquen.SO to submit all your should be like this: This is how you submit 100 posts.When you have more just write instead of 1, 101 and istead of 100, 200, and so on.Oh and after you post something always submit a new sitemap because this way they will index your newest post in a couple of seconds. This is by using google webmaster tools.