Vietnam is a communist country thus it has a tightly controlled centralized economy. Vietnam has also been used as a storefront for Communist China. This disguises Chinese products making them look like Vietnam made when in fact, they are only assembled in Vietnam. China deflects criticism and Vietnam has a booming business in product assembly, packaging, and shipping. A currency value increase would cause Vietnam and China to lose an huge export advantage. China and Vietnam have both been long accused of currency manipulation. I do believe it will, indeed, be a while before Vietnam increases their currency value.
