I got an email the other day from a woman getting married next spring and she was trying to find a pair of shoes with a specific design. She said she did a Google search but she couldn't find anything that fit what she was looking for.
So I did a search of some shoe and style sites and couldn't find what she was looking for either so I told her to ask the bridal salon where she bought her wedding dress as well as local shoes stores.
While Google is a great resource don't forget about the salespeople who know their business inside and out. They will know everything from where to find what you're looking for to whether or not it's even available. So call or email local stores that sell related or similar items and ask them if they have, can get or know where you can get whatever it is you're looking for.
And this doesn't just go for shoes. This is for every type of wedding detail, wedding accessory and any and everything else you can think of.