"thoughtful intervention" is correct and usable in written English.
You can use it when you want to describe an action taken to resolve or change a situation or to provide aid in a way that is sensitive to the existing situation and its implications. For example: "The manager's thoughtful intervention helped to avoid an unnecessary conflict between the two co-workers."
The thoughtful intervention has tended to survive.
Melinda had things well in hand, had even reduced some of the piles on his desk by thoughtful intervention where his specific attention was less than necessary.
Yet the most interesting and thoughtful intervention from the Tory side is an eloquent plea to avoid making this kind of choice.
We should expect and ask more in the way of thoughtful intervention from those who have been propelled into a position to make a real difference to public opinion, and by extension the editorial directions of the more reactionary titles of Fleet Street.
"Like a lot of complicated issues I think what we need is a series of quite complicated solutions that address the problem from top to bottom, a series of co-ordinated and thoughtful interventions that enable change to occur.
This is a pretty thoughtful, considered intervention by John Cridland.
Without thoughtful government intervention, this rate is only expected to increase, and the impact of growing contract employment could have negative implications for millions of Americans.
Core poverty issues in developing countries suggest thoughtful, strategic interventions in areas such as health, education, infrastructure, entrepreneurial activity, and governance.
SOMS is a thoughtful and uncomplicated intervention.
One GP reflects that this is not always sufficiently recognised by colleagues " I think it should be the case that a sick line is a generally well considered thoughtful bit of medical intervention and I don't think it is at the moment.
Effective H.I.V. prevention involves a thoughtful, planned combination of interventions and policies that work synergistically to reduce overall rates of transmission".
