How to print custom text on search no result with search-results.tpl.php?
The core Drupal search module uses several template files that dictate both how search results are displayed, and what's displayed when there are no search results.

If you're already using a custom theme on your Drupal site, the best way to customize those would be to copy and paste the entire 'search-results.tpl.php' file from the search/ module folder into your own custom theme subfolder.

Open that file up for editing and you'll see the following at the bottom:

&lt;?php else : ?&gt;
  &lt;h2&gt;&lt;?php print t('Your search yielded no results');?&gt;&lt;/h2&gt;
  &lt;?php print search_help('search#noresults', drupal_help_arg()); ?&gt;
&lt;?php endif; ?&gt;


This is what's displayed if search results are not found (thus the 'else')...  Modify the text to be anything you want here.  The second line, which calls the search_help() function is the one that displays the search suggestions.  Feel free to replace that too....

And as always, before you can see your changes, you'll probably need to clear cache!