Similar ads customization in item.php

Hello dear members, in item page, i have a section " similar ads" which shows 3 listings related to item post, i want to exceed this number and make a link as well like " see more ads" but related ads to the item post as well. how i can do that? related

Here is my similard ads code:

[code]<?php related_listings(); ?>

<?php if( osc_count_items() > 0 ) { ?>

<?php _e('Related listings', OSCLASSWIZARDS_THEME_FOLDER); ?>

<?php View::newInstance()->_exportVariableToView("listType", 'items'); osc_current_web_theme_path($loop_template); ?>