Site Search is currently returning only partial results.
Site Search will return full results once the site has been fully indexed by Google.
How long this may take is unpredictable - it may be a few days, or may be several weeks.
In the mean time, here are good ways to find a puzzle:
(1) Browse the Puzzles page
(2) Use the Alphabetical Index
(3) Use the Serial Number Index
(4) Use the Artist Index