If a poster has included a ticker symbol in brackets it will be reported when the "Show Related Forum Posts" box is checked on the Search page (http://www.hsx.com/search/). To try this, check the box and type in a ticker or title of a popular movie - I hear a little film called Inglourious Basterds is opening this week, for example. But again, the forum poster must have tagged the post for it to show up.
The Help section is not searchable, but there is a Glossary broken down by alphabetical order. I hope that is sufficient.