Genealogy / Want to find a person [762]

[Moved from]: Looking for Brulinski family members

Hello my name is Sylwia , I have a brother Andrzej . We were both adopted from Warsaw in 1984. I know my moms name was Juliana Brulinski , also know we had 3 more siblings , only know the name of one more , Ania .

Do you have a clue to how to start looking for them?
Thanks