Do you mean getting a

? Sometimes if there are bombinos on the level it bugs a bit. It hits a fruit, then hits the bombino, then hits the next fruit in order, but the bombino is counted 'dead' when it explodes, not when is hit by the

so this results in bombino actually dying after the next fruit.
The same way

hits all fruits at once, but the bombinos die later so you need them to be last in order, or first in order and kill them before getting the sunflower (like level 47).
Also peeling a lichie with a snow bomb will ruin the order. You need to kill them with something like blue bomb, or

,

, use

to knock them off the level, etc.