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But when I check my website in Google.com it doesn't showing the Sitelinks.
However, I recently saw some reports suggesting that they can also appear for other positions in the results now.
have you tried a search for your domain? http://www.google.com/search?q=example.com
you must be considered "an authority" for the search term for your sitelinks to show in the serp.
2nd result indented?: When a site returns two results on the same serp... [webmasterworld.com]
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