??c bi?t chú tr?ng d?ng th?c assessment, lan t?a th??ng hi?u, t?ng m?c ?? nh?n di?n và t?ng ?? belief cho th??ng hi?u trên ?a d?ng công c? tìm ki?m.Numerous theories happen to be made to account for equally the similarities as well as the kinds. In these theories, sure elements of social daily life are thought to be simple and, hence, central