YANGON — Eh Thaw Taw — “Royal” to his Facebook friends — relies on his Huawei smartphone for the usual message-sending, picture-taking and status-updating, but he never, ever uses Google for the simple reason that he doesn’t know how. “I can’t search,” the 24-year-old says, thumbing his phone as we stand under trees on the Yangon University campus, which reopened last fall after being shut down in 1988 by a military regime wary of protests. What if Royal, an economics major, needs to look up, say, the gross domestic product of the United States? “I ask my teacher, who will