Again A Worst lose in Hockey

India vs SouthKorea in Olympic12

In Olympics 12 India lose their 4th consecutive lose  in Hockey. India lost the match by 1-4 againest South Korea. Before that India lost 3 match against Holand(2-3), NewZeland(1-3) and Jermany(2-5). Its look like they can't focus on their game and as a result these type of worst loss are happing.
What do you think behind this worst lose and what is the main reason behind this?