Shoganai is a Japanese word that literally means "there is no way of doing, it can't be helped - nothing can be done". It is interesting word, because it shows the culture of restraint in Japan - people should not complain. Indeed, complaining in Japan has been always kind of a taboo. Complaining is a sign of weakness. Relative word to shoganai is gaman, which means something like "Be patient".
Shoganai is something like c'est la vie. However, shoganai demonstrates the inability of the person to change the outside circumstances. Summer is hot and humid. Shoganai. Government workers are not friendly. Shoganai.