Subhash, if you can come by a taxi to Muri from Bokaro, 18618 Ranchi-Howrah Intercity Exp with ACC and CC accommodation will be available at Muri at 6.40 am on 26th May, Thursday. This will get you to Tatanagar by 9.45 am and this train is generally on time. Bokaro to Muri is approx 60 kms. I dont know if this will be of use to you but other than Rajdhani (where berth availability/ distance restrictions are constraints), this appears to be good option. 18618 is a tri-weekly train running on Thursdays, Fridays and Saturdays.