ibus-zhuyin software package provides IBus Traditional ZhuYin Input Method, you can install in your Debian 9 (Stretch) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install ibus-zhuyin
ibus-zhuyin is installed in your system.
Make ensure the ibus-zhuyin package were installed using the commands given below,
$ sudo dpkg-query -l | grep ibus-zhuyin *
You will get with ibus-zhuyin package name, version, architecture and description in a table
| Distro | Debian 9 stretch |
| Section | Utilities |
| Package | ibus-zhuyin |
| Version | 0.1.0-1 |
| Description | IBus Traditional ZhuYin Input Method |
| Sub Section | Utils |