The Trịnh–Nguyễn War lasted from 1627 right up until 1672. The Trịnh army staged at the least 7 offensives, all of which didn't seize Phú Xuân. For just a time, setting up in 1651, the Nguyễn by themselves went about the offensive and attacked aspects of Trịnh territory. This website https://johnathaneovbh.blog2learn.com/78957000/the-basic-principles-of-vf555