The phrase "a substantial cooperation" is correct and usable in written English.
It can be used when referring to a significant partnership or collaboration between entities, such as organizations or individuals.
Example: "The two companies entered into a substantial cooperation to develop new technologies that benefit both parties."
Alternatives: "a significant collaboration" or "a major partnership."
Despite its capabilities, the U.S., unlike other countries, has not engaged in any substantial cooperation with China because of national security concerns.
This pattern of perceived barriers and benefits results in a collective action problem where substantial cooperation is necessary to overcome barriers to HIE.
Fraunhofer HHI and CITRIS aim at establishing a substantial academic cooperation in this area focused on the strategic coordination of relevant research activities, including joint proposals to United States of America, European Union and German funding agencies and to industry, as well as scientific meetings and other events aiming at the communication and dissemination of research results.
Algeria established a substantial bilateral cooperation with the US in the energy sector, and by 2013 signed a Trade and Investment Framework Agreement (TIFA), a preliminary step towards a US FTA.
But, she added, "The defendant deserves to receive a benefit for his cooperation, and there is no doubt in this case that he provided substantial cooperation and he should receive a benefit".
The reassuring Chinese principle of "peaceful rise" indicates that Beijing does not ignore the risks induced by such a Western perception, but, it is only through a persistent foreign policy of inclusiveness and, beyond, by entering in substantial cooperation with the West that fear can be contained.
In that memo, Mueller praised Flynn for providing "substantial" cooperation and argued that Flynn should receive no prison time, a move widely seen by legal experts as a message to other would-be cooperators that assistance would be rewarded.
Mr. Vincent avoided prison time largely because of the substantial cooperation he provided to prosecutors.
"Substantial cooperation between South and North Korea should essentially be made through economic exchanges," a presidential spokesman quoted Mr. Roh as telling the ministers.
"We have had substantial cooperation from the Pakistanis on the question of Al Qaeda in particular," he said.
