sister, you are too obsessed with vietnam.
If you want to ask me about it. first, the GDP number is very questionable. everyone can cook and manipulate the numbers as they please. you can pay $100 to someone who digs a hole and 100$ to another guy to undo the work of the first guy. what is your GDP? yes, correct, your GDP increases by $200. you feel richer, right?
second, if you want to look things behind the numbers, then you may read the country´s domestic consumption, export/import, standard of living, expectation of life, healthcare, education, public transport etc...
it is useless to feel rich in countries such as greece and venezuela, if most of the people don´t have enough to eat.