You can say that someone goes unrewarded, or that their activities go unrewarded, when they do not achieve what they are trying to achieve.
例句
The jockey rushed back from America to ride at Nottingham on Monday but went unrewarded.那位职业赛马骑师周一从美国赶回诺丁汉参加比赛,但是一无所获。...a long and unrewarded struggle.漫长而徒劳的斗争