ㄴ가 찾다

look for something, find something

Almost every line here is 뭔가 "something" in front of 찾다, "look for, find". It leaves what is being sought unnamed, which suits both the caption 뭔가 찾는 중 "searching for something" and the vaguer sense of searching in life — going and finding something, coming to know it, the very act of thinking and looking for something. Two lines are simply the discovery: oh, I found something. One line uses 어디선가 "somewhere" instead of 뭔가.