Though its title sound like it could be the name of a heavy-metal band’s lead singer, “Sami Blood” is a Swedish-Norwegian-Danish co-production that concerns the Sami people, an indigenous population that raises reindeer in Scandinavia’s far north and, in the film’s telling, were oppressed and disdained by other Swedes in the 1930s, when most of the story is set. But the historical and anthropological interest of entering into a little-known culture is only half the film’s appeal. The other half, centered on a precocious Sami girl who wants to leave her rural roots behind, is a lyrical coming-of-age tale of a sort that Scandinavian filmmakers have long had both a fondness and an aptitude for.