The phrase "a more constructive relationship" is correct and usable in written English.
It can be used when discussing the improvement or enhancement of a relationship, typically in a professional or personal context.
Example: "We need to focus on building a more constructive relationship between our departments to foster collaboration."
Alternatives: "a healthier relationship" or "a more positive relationship".
Fillon said this was a caricature of his position and he simply wanted a more constructive relationship with Moscow.
He added: "There is the opportunity for Iran to play a more constructive relationship in the region.
Johnson signalled a more constructive relationship with Cameron when he launched a strong defence of the prime minister in his speech to the Tory conference.
There is the prospect of a having a more constructive relationship with Iran because there is a bigger enemy which is Isis".
As a senator in 2009, he met with Mr. Assad in Damascus to explore the possibility of building a more constructive relationship with Syria after a long chill.
So too might a more constructive relationship with the state, if the new governor, Eliot Spitzer, can bring Albany to heel as effectively as he did Wall Street.
He said he and his investment group were entering into "a much more constructive relationship" with Saakashvili's government.
Mr. Putin's strong support for America in the fight against terrorism has opened the way to a warmer, more constructive relationship between Russia and the United States.
To help with that, banks "need a much more constructive relationship with customers, with the public, with governments and with regulators," he said.
"I think this has led to a much more constructive relationship between the Icelandic government and the British Government, which was pretty glacial, frankly," he said.
"It would be fair to say that, from the union perspective, we would wish for a better and far more constructive relationship with the university at the moment," Nigel Haworth, head of the country's Association of Academic Staff, said.
