To one who is uninitiated in the legal terminology you are using, your writing appears clear and to the point. For the sake of clarity, I would only suggest the following changes, which I've maked up in red:
Judicial sentences are given to the parties in form of texts. It is of fundamental importance that the text through
witchwhich a judicial sentence is given is clear or at least understandable. Although judicial sentences are normally clear, the number of cases of incoherent, obscure, or incomprehensible texts is worth noting. Frequently, the problem is detected only when the parties demand compliance with the sentence and no resource in order toconcerning its clarification is still available anymore. When the meaning of the sentence is a mystery, it is necessary to know what one ought to do in relation to it. Specially, it is necessaryIn these cases, it is especially necessary to know how the res judicata doctrine relates to thesequestions concerning these judicial sentences.
TheThis thesis presents a theory based on the different degrees of obscurity that a judicial sentence can showmay manifest, and onas well as the dissimilarities between the creation, interpretation, and enforcement of judicial decisions. Starting from these distinctions, answers are given according to Brazilian procedural law.