/ˈpraɪvɪt ˌɪntərˈnæʃənəl lɔː/ – Phrase
Definition: Luật pháp về quốc tế tư pháp.
A more thorough explanation: the body of law dealing with disputes between private individuals, business entities or organisations living in different nations and governing such things as applicable law, jurisdiction and enforcement of judgments
Example: It runs counter to so-called international civility, which is not a moral but a legal category in private international law.