This is the 92nd most frequent Serbian word.
требало
The word "требало" in Serbian means "should have" or "needed to" (past tense).
In this sentence, 'требало' is used as part of a conditional expression with 'би', forming a suggestion or advice.
Требало би да одеш код лекара.
You should go to the doctor.
Here, 'требало' indicates a past necessity or need.
Прошле недеље ми је требало више времена за учење.
Last week, I needed more time for studying.
In this construction, 'требало' is used in expressing a hypothetical or reflective statement about a completed action.