Looking for birth family?

I'm looking for my birth family. I had 6 brothers and sisters and i'm the youngest girl. My name is Marta and I was adopted Aug 31, 1994. My birth name Was Martha Aranda and my mother was Paula. Last i know my family is still in LA California. I'm 22 years old and was born October 1,1988. My Sisters names are Gloria, Arlene, Tina. So if anybody can help me out that would be greatly appreciated.