No matter how much someone wants to do something for you, they may not be able to due to internal constraints.

无论有人多么想为你做些事情，但由于内部的约束，可能都无法实现。

youdao

However if your parting is due to something less serious, you may be able to ask your boss for a reference, in spite of the fact that "things didn't work out as expected."

但是，如果你的离职不是因为这么严重的事情的话，你就可以向你的上司要一封介绍信，即使起这封介绍信起不到预想的作用。

youdao

It very much makes the Games something for the whole of the UK not just where the events are due to be.

BBC: School Report: Land's End lights the way to London 2012