We just added Google search to our wordpress, there is a problem: Beside the fact that we hided the normale wordpress search, the NO RESULT page still appear like that:
Are you using a plugin and if so what plugin? Either way try:
Check your 404.php template file and make sure it’s using comments_template() and not manually outputting the manual <input name="s"> form.
If it has comments_form() check that you have a comments.php file with comments_form() in it
Usually if you add a plugin and it updates the search field in one place and not another it’s because the theme is trying to manually recreate the search field instead of using the core wordpress methods to do it.