Looking For my Birth Family in the Philippines

Hi, I was Born on December 8, 1985. i am looking for my birth mother/father. We lived before in Francisco St. Tondo Manila. The friend of my "birth mother" DADA(name) gave me to my current family. but DADA is dead now so i don't know the story. i have a birthmark in my right thigh. i don't know anything about them. i wish someone from TONDO manila, and someone knows DADA will read this and help me. i just know the truth last 3years. and my current family didn't know about my birth family too.