For example: http://diablonut.incgamers.com/item/tyraels-might
It won't permit, for example, 3 sockets and magic find or gold find. I'm assuming this is because of the 2 affix restriction which applies to blue items in that a 2 affix blue chest can't have 3 sockets and GF/MF etc. However, this is possible on the chest, as there is a goldfind/3socket tyrael's might on the AH now.
P.S. To whoever manages the database, it's bloody awesome. I spend too much time on it wondering at the possibilities available for characters