en WordPress.com Forums Nguyen Trung-Tuan's Profile trungtuan Profile Topics started Replies created Profile Topics started Replies created trungtuan Forum role Member since Last activity Topics created Replies created Member Aug 4, 2007 (17 years) - 0 5 Forum role Member Member since Aug 4, 2007 (17 years) Last activity - Topics created 0 Replies created 5 Bio A math teacher.