The script gives me only one private key each time and Blockchain.MyWallet.wallet._getPrivateKey(0,"M/0/0") shows the private key of the latest address produced. When i used the iancoleman tool it showed me the full list of the addresses along with its related private keys (including the latest address) except the one that hosted my bitcoin in the time of the fork; I've used the ctrl+f function over more than 50000 address but still couldn't find it. is there any way to locate it using the seed phrase ?     

Thanks for your time