Greetings. I don't think it does or even if it does the impact is negligible. In sacred gold, the contents from chests, barrels, cabinets etc. are mostly limited to gold, potions and sometimes low level equipment. On rare occasions, you may also find books or icons. While generated randomly, these contents are often predetermined as you approach the container; that is to say, you can't change the outcome via q-save/load. I don't know much about "Greed" but if it works in the same vein as "chances to find special items" aka "Magic Find" then you won't see much difference as I've a few chars with (relatively)high MF but yet to see high level unique items falling from crates/barrels!
As such, your best bet is to find some high level baddies and put both your hammer and greed to good use Enjoy your time in Ancaria!