In this article, we have presented the practical use of the Delphi technique and the Stable Prioritization Towards Ideal Solution (SPOTIS) method to in-depth assess the level of sustainable development of Hai Phong and Quang Ninh in the period 2016 - 2021. Nội dung trích xuất từ tài liệu: Research on sustainable development level: A case study of Hai Phong and Quang Ninh