Some Vietnamese women may be too shy to initiate the first contact, but there is no reason for you to miss them, if you think they are attractive. Just a reminder: you should use caution on Vietnam Cupid, like when you are on any other dating site. Never send money to anybody you meet on a dating site, before you have met her in person. You may want to visit the site from time to time.
The right woman may be waiting for you just at your next visit to the site.