Edit file File name : 66-google-noto-sans-tai-tham.conf Content :<?xml version="1.0"?> <!DOCTYPE fontconfig SYSTEM "fonts.dtd"> <fontconfig> <alias> <family>sans-serif</family> <prefer> <family>Noto Sans Tai Tham</family> </prefer> </alias> <alias> <family>Noto Sans Tai Tham</family> <default> <family>sans-serif</family> </default> </alias> </fontconfig> Save