How to get a search bar to function - HTML template

So the gorgeous theme that I’m working with has a search bar with the following code that apparently needs some sort of third party plug in. Does anyone know where to get this and where to put it? Google and Bing don’t look right somehow.

Thanks much. Search Form—> div class=”search-form” form method=”get” action=”#” input type=”text” class=”search-text-box” /form

The search form suppose to do a query in the SQL database, but HTML templates don’t have a any.

Google search would help in this case because it can cache your site in it’s database and your queries run over there, and even via AJAX as far as I know.

Thanks much. Will give it a whirl.