Hi Tien,
Perhaps you may want to look at the : Udana Sutta: Exclamation (SN 22.55).
In the earlier part of the sutta, The Buddha shows how one can overcome the five lower fetters (samyojanas). By overcoming these five lower fetters, one effectively becomes an Anagami. How does one overcome these five fetters? By discerning the three characteristics of anicca, dukkha and anatta for the five khandhas. To reach that stage though, one must be knowledgeable and well practised in the Dhamma, and maybe even respectful of Ariyas.
But The Buddha does not stop there. He goes on to explain how to become an Arahant in the later part of the sutta. It is through the ending of passion (possibly tanha) for the five khandhas that one attains Nibbana.
Hope this helps to point you in a possible right direction!