Complex sentence: During the lunch family members break the česnica and the one who finds coin in the piece of bread is considered to be most fortunate that year; howerer, the head of the family has to buy the coin so it stays in the house.
Split into simpler sentences: During the lunch family members break the cesnica and the one who finds coin in the piece of bread is considered to be most fortunate that year. But the head of the family has to buy the coin so it stays in the house.