Have a look at the charts attached. While BHEL and DLF are in a downtrend, RNPL looks to be in a sideways trend. So the strategy is simple (may not be for you because you will incur a loss doing this) - for BHEL and DLF you short them in the resistance zone and for RNPL you sell in resistance and buy in support.
I have tried to mark those areas in the charts. If i were you i would be getting ready to sell all the 3 because they are close to reaching the resistance.
You may be able to recover your losses if you follow this strategy consistently. Going short on BHEL and DLF you can use futures. I dont know if it trades in future, but otherwise you cannot short it.
Thanks,
Sachin