Only single daughter property no sons

My father was dead in 1975 when I was child .. my mother married after 7 years .. she left me at my grand parants my grandfather did my marriage at 1987 and my grand father died at 1993 my grand mother also died my grandfather has 3 sons I am only single daughter of predecesed son my grandfather have 25 Acer's land X is ancestral and Y is self acquired .. my uncle's my father brothers totally occupied all my grand father property.. last 10 years back they did a unregistered family settlement.. when I was asking my share they told u r a daughter u don't have a right please give a suggestion.. any limitations for asking partition.