Post Indexer / Site Search

Hello, I installed both plugins yesterday and let the post indexer run overnight to index the posts. Plenty of posts have been indexed according to the plugin, I assume the rest will follow.

However, I cannot search for anything via the page set up: http://www.ltworld.co.uk/site-search/?phrase=a

Despite about 130 posts being indexed none of them show up when I search on the front end. I have checked all over the admin for more options but can't see anything else I can change.