The phrase 'fruitful direction' is correct and usable in written English.
You can use this phrase to talk about something meaningful or productive that has been achieved, particularly when the outcome is better than expected. For example, "The negotiations between the two sides took a very fruitful direction, and both achieved outcomes that exceeded their hopes."
Ding Ling's conversion to Marxism channeled her writing into a new and initially fruitful direction.
As the winning design suggests, a new and more fruitful direction might be found in Heschel's idea of sanctified time.
The MACHO, in other words, acts as a gravitational lens.The most fruitful direction to look for this "microlensing" is towards the Milky Way's nearest neighbouring galaxy, the Large Magellanic Cloud.
To the Editor: Re "Let Congress Go Without Insurance," by Nicholas D. Kristof (column, Oct. 8): Mr. Kristof's "proposal" that Congress go without insurance in proportion to the American population that is uninsured does point us in a fruitful direction for health care reform.
Given that they haven't shown much of a track record in solving their own problems, this doesn't seem like a fruitful direction to pursue".
Our hope is that this paper sheds some light on a fruitful direction of future research for privacy preservation in WSNs.
But some works point in potentially fruitful directions.
Rather than try to suppress our love of celebrity, we ought to channel it in optimally intelligent and fruitful directions.
Then in a slightly later picture, "Iris (The Dance)," painted a few years before his death, Watteau expands the fête galante idea in fruitful directions.
In 1844 he was married to the gifted poet Maria White, who had inspired his poems in A Year's Life (1841) and who would help him channel his energies into fruitful directions.
In Chinese texts there are suggestions for theorizing about this experience, but the suggestions often indicate several different and fruitful directions for theorizing to go further.
