add tag
Anonymous 8536
I use this code

```
\documentclass[12pt,a4paper,twoside,openany]{book}
\usepackage{fouriernc}
%\usepackage[utf8]{vietnam}

\begin{document}
	\tableofcontents
	\addcontentsline{toc}{section}{\textbf{Thư gửi anh chị em giáo chức Công giáo nhân Ngày Nhà giáo Việt Nam 20/11/2024}}
	
\end{document} 
```
I get a bug

![image.png](/image?hash=3e5bb8a1540899d27888b360a4dc889f8e7ff6ff0b8152fc76ab4567d0bc7ca3)

How can I repair it to get the correct result?
Top Answer
JohnPaul
I think, you only turn on the line `\usepackage[utf8]{vietnam}` 

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