多谢盈盈！I found it on Amazon.com

Here is the link for anyone who wants to get it:

http://www.amazon.com/Bobs-Red-Mill-Semolina-24-Ounce/dp/B004VLVG0C/ref=sr_1_1?s=grocery&ie=UTF8&qid=1380314615&sr=1-1&keywords=semolina+flour

Thanks!