Possible Encroachment of any property

Hi, Am Shakunthala Mishra, a resident of Ghaziabad location. My late father had bought a property under my name in Bachupally Village in Telengana in the year 1990, when I was still a minor of age 10. The plot is in Bachupally area in Hyderabad location (The then Andhra Pradesh). Till 2013, my father was in touch with the broker who sold him the plot. But unfortunately, the broker died in the year 2013. And in 2016, my father passed away too. Now, Am left with the legal documents which were made in the year 1990, which has the sign of the owners and witnesses and of course of my late father and a vague map of the area. I also managed to get the encumbrance certificated from online, which bears my name and the seller's name. However, these documents only have survey numbers and plots numbers on them. There is no particular map on them as such. Hence Am finding it extremely difficult to locate my plot. I tried contacting the village Sarpanch, but he too is of no help to me. Much to my surprise, he seems to be totally clueless about the plots in this own village. By the looks of it, the area has developed quite well, and there is every possibility that my plot has been encroached. However, since I have not been able to locate the plot precisely, I cannot say for sure. I am currently residing in Delhi and my physical presence in Hyderabad will be next to impossible at the moment, as I Am caught up with my office work and family. It would be of immense help if someone could direct me how to go about it. I really need to locate my plot and there by check for any possible encroachment. Thanks