that's the point, the meaning can be very different.even if I can relate each word but it doesn't mean that I will find the real meaning of the word

The bad news is, you simply have to learn them. Be aware that the meaning of a phrasal verb can change completely if the context changes.

The problem with phrasal verbs is that they have a completely different meaning than the words from which they are formed. So the best you can do is to associate them with words which remind you of these phrasal verbs, or draw their meaning, so you can remember them easier.

I think you only have to learn them. For example: I wish to break away from you. "To break away" is in Spanish "separarse, alejarse". The whole sentence is: Deseo alejarme de ti.