/ˌbɛnɪˈfɪʃəl ˈɪntrɪst/ – Phrase
Definition: Quyền lợi lợi ích.
A more thorough explanation: a right in something (property or an estate, etc) as opposed to having actual title (=legal ownership) to that thing
Example: The company anNounced that it had acquired a 78% beneficial interest in the property.