For pdf functionality you need PDF addon. If not included in your script can be purchased here:
https://codecanyon.net/item/real-estate-pdf-export/21264560
PHP PDF library only supports croatian and english characters. Customizations for other langauges can be added in application\libraries\Pdf.php
Hints:
If you found solution for your language will be nice if you can share it with us so we can integrate it into future updates. ( NOTE: You will receive free gift from us )
Thanks