'extensive collaborations' is a correct and usable phrase in written English.
It is typically used to describe a situation in which numerous people, organizations, or entities work together in order to accomplish a shared goal. For example, "The company is undertaking extensive collaborations with businesses around the world."
Dramatist and screenwriter David Williamson exposed the Sydney middle class and its concerns with style and property, while poet Dorothy Porter probed deeper into crime, sex, and innocence in verse novels and extensive collaborations.
And we have very extensive collaborations with academics".
This paper describes the use of extensive collaborations to reach shared beliefs about teaching and learning mathematics with the goal of improving student learning; accomplished by preparing and supporting school-based mathematics specialists to coach K-8 teachers.
But he's perhaps best known for his extensive collaborations with Kanye West, helping the rapper shift his direction into a more bombastic and explosive tone, co-producing "Mercy" and multiple tracks on Yeezus.
You can learn a lot about a college faculty and student body from their reactions to criticism, and I've learned plenty after publishing three short essays over Labor Day weekend, including one here, that criticized American colleges' extensive collaborations with authoritarian regimes abroad.
Here Eccles and Edmondson are studying ambitious and innovative initiatives that are based on extensive collaborations of many different types of experts, use of leading-edge technologies, fundamentally different approaches to contracting and construction, and new ways for the public and private sectors and civil society to work together.
It usually requires extensive collaboration and coordination.
Their most extensive collaboration, however, has been with Björk.
"N.I.S.T. has a long history of extensive collaboration with the world's cryptography experts to support robust encryption.
But if they accomplish most of what they say they intend to, this would probably be the most extensive collaboration between two world-class museums.
None of these has simple solutions, and they all require extensive collaboration between the public and private sectors, civil society and academia.
