Behaine - taberd dictionaries as foundation of Quoc Ngu's spelling and writing

The paper describes two dictionaries compiled by Pigneaue de Béhaine and Jean-Louis Taberd as the foundation for the Vietnamese script, shown in the solutions using Latin letters, combined with some diacritics to describe parts of syllables in Vietnamese. The paper also pointed out and analyzed the causes of the success and great contributions of these two dictionaries.