First of all, @BlackBeans, thank you so much for your quick answer.
I´ve checked both options and, although I found them quite useful, they´re not entirely what I was looking for.
The problem is that I don’t have to learn, let´s say in the example, only one childish song, but some hundreds, and I think that the way in which LPCG works, that is actually the way I was already doing it, although manually, in the long run makes me lose the connection between the parts.
I mean, just to be clear, what I have to learn are a lot of articles of different laws.
Anyway, checking the options that you suggested has helped me to understand that Anki, simply, doesn´t work the way I was asking for. Although I think it could.
I mean, the principle behind the Spaced Repetition wouldn’t be too much compromise if Anki, instead of shuffling only cards, would shuffle groups of cards, so you learn that the data contained in those three or four cards go together.
Just to make myself clear, imagine that you have a long sentence, whose information that can be split in three different notes. You group those three notes, and then, you add the group to the deck, so it is shuffled along with the others.
When that group it´s delivered, you´re first asked the card of the first note, then the second, and finally the third one. The score of the group would be the worst of the three notes, so they go always together.
I think that would be a quite useful feature for Anki.