The least inefficient way would be to print them from your EFB. Grab a rainforest of paper for your printer, though.
There is no authoritative ‘combined’ file in existence with all of the CAOs, so far as I am aware. That’s probably because changes are frequently made to individual CAOs. Therefore you should note that your printed collection will be probably be out of date the minute after you’ve printed it, and certainly out of date within a few weeks or so.
Or you could wait until 1998, because that’s when the new, simple, outcomes-based harmonised regulations will be completed and supersede all the CAOs.