HRciti Featured World-Renowned Author and Executive Coach, Dr. William H. Davidson for a Second Seminar in the Human Resource Development Series, Vietnam LOS ANGELES, CA and HO CHI MINH CITY, VIETNAM--(Marketwire - April 6, 2009) - Providential Holdings, Inc. (OTCBB: PRVH) (FRANKFURT: PR7), a company engaged in M&As, real estate, mining, and...