Vietnam’s richest man Pham Nhat Vuong plans to increase his stake in his closely held company VinEnergo Energy in the form of 60 million Vingroup shares valued at around VND10.6 trillion (US$402 million).Vietnam’s richest man Pham Nhat Vuong plans to increase his stake in his closely held company VinEnergo Energy in the form of 60 million Vingroup shares valued at around VND10.6 trillion (US$402 million). VnExpress English