as they explained, the village you're looking for is called Ključ, located in North Dalmatian Hinterland 25km from Šibenik, 10 from Drniš, in Ključ and Kaočine Kulušić is still a common surname, Miljevci is a name of that area, a group of 7 villages :)

my family still lives in Kaočine,
but lots of people left the village and moved in Split, Šibenik, Zadar or Zagreb (most popular destinations)

"Ellis Islanders" from our family tree (my grandpa's brothers and uncles) landed in Chicago