The Vietnamese word "á»·" is a verb that means "to depend on" or "to rely on." It is used when you want to express that something or someone is the basis for another thing or that you trust in someone for support or help.
Tôi phụ thuộc vào bạn. (I depend on you.)
Chúng tôi phụ thuộc vào thời tiết để tổ chức sự kiện. (We depend on the weather to hold the event.)