Have you tyred doing a search for Asian Fabric patterns on any of the main search engines?

These were the first 3 that came up on a Yahoo Search...

http://www.hartsfabric.com/cotton-prints-asian-fabrics.html

http://www.bugfabric.com/asian_fabrics.htm

http://konabay.com/mm5/merchant.mvc

you might be able to get permision to use some of the samples if you ask.