Search website with a form

[Richest]

Voda Host provides a form that I believe can be used to internally search a website for matching keywords. (i.e. a visitor looking for information within the website on a specific topic.) I have tried to use the form "Site Search Google", but it is not making sense to me. Is this form suppose to be able to return results with links within the website that match the keyword searched on? If anyone has any ideas on how to search within a website using Voda Host, please let me know.
Thanks,
Rich
Zionsbranch.org