How to get my agricultural property grabbed by my relatives?

Hello Sir/Madam, I am Yadagiri.G from Appalammagudem (Vill), Borraipalem (PO), Thripuraram (Mon), Nalgonda (Dist), Telangana. My grandfather and his elder brother 40 years back approximately shared our ancestral property without precise survey. His elder brother took his share property as per his wish and unused and poor fertile land given to my grandfather. Both of them got 7 acres each. They passed away and registered the land on their son’s names. My uncle and two aunties (my grandfather’s elder brother son and daughters) forcibly registered my father one acre land on name of one of my aunties. My uncle grabbed 0.125 acres land from my father and caused to his death. My uncle and his sisters tortured my father physically and physiologically and caused to my father’s brain nerves damage. After my father’s death also he grabbed 0.25 acres of land. The remaining land has been transferred to my grandmother and mother name. How can I get my land 1)forcibly registered by my aunty and 2)grabbed by my uncle and how can I share my ancestral land by precise surveying.