Chess.com pagination only goes up to 100 for all searches. If you want to see older puzzles, you can do a search with the date on this page:
http://www.chess.com/members/view_content/dailypuzzle?keyword
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Why can't you see posts past the 100th page?
http://www.chess.com/forum/category/daily-puzzles?page=100
You can't see any older daily puzzles :(