/pɑzətɪv vɛtɪŋ/ – Phrase
Definition: Quá trình xác minh tích cực.
A more thorough explanation: the action or process of thoroughly examining the background and character of a candidate for a civil service position that involves access to classified information (=information that is secret and which only a selected number of people can know)
Example: This is the most exhaustive positive vetting procedure ever devised.