/ˈrɪtən ˌkɑnstɪˈtuʃənəl lɔː/ – Phrase
Definition: hiến pháp thành văn.
A more thorough explanation: Written constitutional law refers to the body of legal principles and rules that are explicitly set forth in a written constitution. This includes provisions related to the structure of government, the distribution of powers among different branches of government, the rights and duties of citizens, and the procedures for amending the constitution. Written constitutional law serves as the supreme law of the land and provides the framework for the operation of the government and the protection of individual rights.
Example: The Supreme Court’s decision in Brown v. Board of Education is a landmark case in the field of written constitutional law.