The problem I am facing is depicted here in this image -
As you can see, the foreign characters become auto bold. I spent some time looking for the solution but this is all I could find - http://www.cryoutcreations.eu/forums/t/incorrect-display-of-special-characters.
The problem replicates in mobile google chrome and also on mac safari but renders fine (all text with uniform weight) on Mac google chrome.
EDIT: The problem can be seen live here - http://respectvn.townhallapp.io/vi/c%C3%A2u-h%E1%BB%8Fi/63/k%E1%BA%BFt-qu%E1%BA%A3