By default, when installing the version of office word 2007 or word 2010 and even new 2013 word, when typing Vietnamese words, underlined lines will appear in blue and red that look quite “itchy”, if you want to remove completely underlined lines then follow the instructions below.
This is a guide to delete the way foot on word 2010, in word 2007 you do the same.
Click the File tab, then select Option:
Go to Proofing and remove the check marks as the red circled at the bottom and select OK
Now, see if the words in your word are underlined in annoying red and blue