The Trịnh–Nguyễn War lasted from 1627 until finally 1672. The Trịnh army staged no less than 7 offensives, all of which failed to capture Phú Xuân. For just a time, starting off in 1651, the Nguyễn them selves went around the offensive and attacked parts of Trịnh territory. This Site https://vf55590011.dailyblogzz.com/31527732/about-f8bet