Bainama within family?

When there is no birth from my mother...my father has conducted second marriage. After his second marriage my birth took place as first child in family from his first wife. After that from his second wife 3 child born, 1 boy & 2 girls. Long period gone....after death of my mother(his first wife) my father sold 60% of good condition agricultural land(Which he get from his father ie. my Dada ji) to my step brother's wife name @ Rs.30,00,000/- & stamp duty Rs.1,74,860/-. As witness my father's brother inlaw & brother inlaw's son signatures was mentioned on Bainama (Sale Deed). These matter is disclose to me after two years of Bainama. Even I (age 48 years) had provided regularly his personal expenses & clothes & also given fund for making house till case is file in Deoria Dist. Court, UP. After Case file he is not taking money from me. My Money Order is return back. This Agricultural lands is from two Village Hadaha & Karahkol, Dist. Deoria, State-U.P. Both villages are still in Survey before above Bainama Date. How I will get my part of share in Agricultural land (Sold & not Sold)? 2.5 years gone nothing much happened in Court. After Summon they appear in Court after two years. After appearing in Court from 5 months they had not jawab dakhil till date. I'm getting just Tarikh pe Tarikh.