MYANMAR—A quest to find 140 British warplanes rumored to have been buried in Burma at the end of World War II has only turned up bundles of electric cables and water pipes, according to a news conference held by the team searching for the single-seat fighter planes, known as Spitfires. The team, including 21 archaeologists, has been searching in three different locations, including one next to Rangoon Airport, where ground-penetrating radar revealed a heavy concentration of metals. Spitfire enthusiast David Cundall, who has been leading the search, thinks the team must be looking in the wrong places.