Genealogy / Help finding siblings after adoption from Warsaw orphanage [7]

Hi, I am searching for my siblings from both of my biological parents. I have their names and everything that was supplied to me through my birth certificate. I also know the street the orphanage was on in Warsaw. I was adopted in the early 80's. How do I go about searching for them? It is possible that I do not have any full sisters or brothers only half siblings. Any help would be greatly appreciated. Thanks in advance Ania

Here is the information I have. Fathers name is mirosław stanisław zadykiewicz. He was born on April 9 1953 in wołomin. At the time of my birth he lived at ul. paplinskiego 48/7 wołomin. I know he was in and out of jail during that time and at some point after my adoption my birth parents did marry. I do not believe they are still married. My mothers name is Bożena Gil. She was born in August 28,1955 in Otwock but resided in Sulejòwek when I was born. My birth name was Kinga Zadykowicz and I know she had a child after me and gave her the same first name. I should also let you know I have met my birth mother in the early 2000's it was not a very useful reunion as the toll of alcohol was getting in the way of her memory. She told me she had three kids total and all of us had been taken away. I know one sibling might possibly live in France with the biological father (not my bio father) she also told me that my bio father had some other kids as well but didn't know any further information. I am not sure what happened with her other child if he or she was adopted or just placed in an orphanage. Once again any help would be greatly appreciated.