Unicode font

Hello,
Please support Unicode font (UTF8) for the google maps plugin.
The plugin don't accept If I enter the location(s) that I want to display is: "Hà N?i - Vi?t Nam" , "?à N?ng",... I have to change them to "Ha Noi, Vietnam" .
You can test with any location "http://g.co/maps/uab7g" that it use Unicode font
Thank you