how to get unspents of an address using bitcoind?
You should send your addresses as following: 

bitcoin-cli listunspent 0 9999999 '["1PGFqEzfmQch1gKD3ra4k18PNj3tTUUSqg","1LtvqCaApEdUGFkpKMM4MstjcaL4dKg8SP"]'