You need to earn at least $400 per month (or $4,800 per year) to support a wife, and you must be able to help her for at least two years. This means that you will need to provide basic food, shelter, and clothing. If you cannot do these things (or are not willing to work hard enough to do these things), you cannot marry a Vietnamese woman. Finding a Vietnamese mail-order wife is the same as the process used by other agencies that use online dating websites. You complete an online application that asks you about your income, education level, health, family background, and location. Then, the agency reviews your application and decides whether or not to approve you for further consideration. Once an agency approves you, you must start looking for a woman whose profile you like.