The following book by Choong Mun-keat may be useful on the issue/question regarding dukkha, nirodha, the cessation of the five aggregates:
The Fundamental Teachings of Early Buddhism: A Comparative Study Based on the Sūtrāṅga portion of the Pāli Saṃyutta-Nikāya and the Chinese Saṃyuktāgama (Series: Beitrage zur Indologie Band 32; Harrassowitz Verlag, Wiesbaden, 2000).
The particular collection of the Pali SN and the Chinese SA is mainly about knowing and seeing the four noble truths, the notion of anicca, dukkha, suñña (empty), anatta, and the middle way, which all are the core teachings of Early Buddhism.
For PDF, see below site: