Text mining in the trend of education 4.0: A study on clustering mathematical terms of algebra textbooks in Vietnamese high schools. Journal of Contemporary Educational Policies and Practices, [S. l.], v. 4, n. 4, p. 59–68, 2020. DOI: 10.52296/vje.2020.81. Disponível em: https://ojs35.mpos.io.vn/index.php/journal/article/view/81. Acesso em: 3 apr. 2026.