Bitcoin cash with bicore and addressindex Bitcore runs a version of bitcoind where theres address index and we can search any addresses I have implemented the bitcoin insight block explorer and its working perfectly 

I need to implement bitcoin cash (bitcoin ABC or Unlimited) but my question is can I search using addresses if I mix bitcore + bitcoin cash 

I mean does bitcoin ABC comes with address index function ? thats compatible with bitcore ?
Bitcoin Cash client does not support address index like Bitcoin, so you need a patched client to use this feature. You can use https://github.com/bitprim/bitcoin-abc. I also forked bitcoin-abc with address index feature. This repo is in https://github.com/Sotatek-DucPham/bitcoin-abc. Follow the build guild and get your bitcoind, remember to add usecashaddr=0 in bitcoin.conf before run. Good luck.