Yes, we know, it searches the whole site (in the future we may make the search machine available from all pages) and the search index is not yet 100% complete. As we do not want to spend much time for this, as an experiment, we're just using a Google Custom Search Machine; missing pages may be added the next weeks.
But IMHO compared to the old search (no search), this one is much better
Best regards,
Your Silverjuke-Team