In SharePoint 2010, I used this third party Managed Metadata Exporter from codeplex but it does not support SharePoint 2013. We had a requirement to export the terms for management review during a meeting. I found a powershell script to export on technet and although it is a pretty messy export, it does the job! Hope it helps.
https://gallery.technet.microsoft.com/office/PowerShell-for-SharePoint-a838b5d0
As many of you know, SharePoint 2013 no longer has the “Sign in as a different user” option like SharePoint 2010 offered. Many of you also know that you can just add “_layouts/closeConnection.aspx?loginasanotheruser=true” to the end of your main site url to do it or log into IE as a different user. This can become a hassle though to have to do it each time.