Southampton were left frustrated again after dominating Swansea City at St Mary’s but failing to find the breakthrough.Caspar Jander hit the post late on and Leo Scienza also struck the woodwork as Will Still’s side created chance after chance without reward. It’s now five draws in seven for the Saints, who continue to search for that cutting edge in front of goal.Will Still praised the performance as “one of our best of the season,” but admitted they must start turning dominance into wins.