HO CHI MINH CITY - Longtime Silicon Valley residents bump into each other along fashionable Dong Khoi Street. They meet to swap business cards and network at Highlands Coffee, the Starbucks of Vietnam. Valley real estate agents are here to cut real estate deals. Even San Jose's iconic Lee's Sandwiches, which is branching out across Asia, plans to set up franchises of its Vietnamese fast-food chain in what was formerly known as Saigon. "Everywhere I go, I see someone from the valley," Henry Liam, a lawyer and instructor at San Jose City College, said while sitting at the upscale Mojo cafe.