을 찾아야 해

have to find

→ 을
phrase Uncommon #7,151
have to find Used after an object noun ending in a consonant to say that someone must find or look for it. 찾아야 해요 is the polite form.
KO: 빨리 방법을 찾아야 해.
EN: We have to find a solution quickly.

을 찾아야 해.

I need to find Nick.

— 주토피아 2 (2025)

여기 있으면 안 돼 숨을 곳을 찾아야 해

We can't stay here. We need to find somewhere to hide.

— 콰이어트 플레이스 (2018)