This post explains how to display specific number of posts in Blogger Labels page (controlling the number of posts displayed when the visitor clicks Labels):

Please Note: Before Editing your Template, Save a copy of your current template by clicking ‘Download Full Template’ in ‘Edit HTML’ page of the Blogger ‘Layout’ Window and ‘Preview’ the changes before Saving.
  1. Go to Blogger Layout – Edit HTML – and click Expand Widget Templates.
    Show Specific Number of Posts in Blogger Labels Page
  2. Then Search(Ctrl+F) the following piece of code in your template:
    data:label.url

    (This code normally occur 3 times)

  3. Now Replace(every occurrence) the above code with:
    data:label.url + “?max-results=n

    (where n is the number of posts to be displayed)

  4. Save the template. Finished!

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