Some of the transaction disappeared from my wallet that were having problems with confirmations.(network propagation - 0%(very poor))

total 3 transaction disappeared from my wallet and 1 came back.

3 transaction that disappeared :-
a. https://blockchain.info/tx/39a22fc47e879d16a307b3cb3cc1a742fa35daabb7d25ea079ce396a5e6b041f
b. https://blockchain.info/tx/48df837926aaa897a10d40ee2ca8d2d88044fef1107632f739113112e8134f69
c. https://blockchain.info/tx/15f21b3a29d1cc91c8d2121b5a72c928f284023de53d49130e360ab2c1c8551c

only "a" transaction came back.
What now??
Will other transaction come back or what??