The Vietnamese word "càn quấy" refers to behavior that is unruly, wayward, or disruptive. It is often used to describe people, particularly young individuals, who do not follow rules or behave in a manner that society considers acceptable.
Câu 1: "Những thanh niên càn quấy thường gây rối trong lớp học."
(Unruly youths often cause disruption in the classroom.)
Câu 2: "Bố mẹ tôi rất lo lắng khi thấy tôi kết bạn với những người càn quấy."
(My parents are very worried when they see me making friends with unruly people.)
In summary, "càn quấy" is an important term in Vietnamese that captures the essence of unruly behavior, particularly among young people.