Each close caption segment is a few sentences. When doing searches keep in mind that a sentence may break mid stream so exact phrase match may be missed in broken sentences. The metavid search process currently uses mysql FULLTEXT SEARCH in boolean mode. This means that you have a few parameters that you can control in doing search queries. For example if you search for “iraq war” that will match the exact phrase, or if you search for +iraq -war that will find only instances where iraq is mentioned and war is not mentioned. You can see the full documentation on boolean full text searches in mysqls documentation.
I have also updated the search page and front page to highlight popular queries that people have been making.
update: you can now also jump to any available day on the search page.