errors in special characters

Hi,
You can use another solution with pdf export. In the installation package, you have the file TCPDF.zip, please copy it to root of your Joomla folder and extract it. And then, please go to Configuration > Tab Property > Field: Select pdf export library and select Tcpdf.
After that, try to export the pdf again and see the result.
Good luck
Dam

Ok Dam, It worked

but the letters were out of focus.