The phrase "a rich network" is correct and usable in written English.
You can use it to describe a situation where there is a large and complex system of interconnected people, organizations, or things, such as a group of influential contacts or a massive collection of information. For example, "The CEO had a rich network of contacts in the business world that enabled her to quickly expand her company."
And it draws its strength from a rich network of collaborators — across governments, universities, and industries.
In January, Belgian and Swiss researchers identified a rich network of glymphatic vessels within the optic nerve.
He also says Dr. Ford was Miss Morgan's landlord; the new Harlem was a rich network for African-Americans.
A rich network of civic capital offered "our kids" trusting interactions with non-parental adults that socialised them and ensured failure did not have to be fatal.
American conservatism now has a rich network of Washington interest groups adept at arousing elderly donors and attracting rich lobbying contracts.
The linker is embedded in a rich network of polar contacts at the domain interface that results in a stiff molecular conformation.
For example, very happy people are highly social and tend to have strong relationships; kids with a richer network of connections grow up to be happier adults; and socializing is one of the most positive everyday activities.
Prominent scientists tend to be better funded and have a richer network of colleagues, and they won't directly compete with you after you finish your Ph.D. Senior established scientists also tend to be more geographically and professionally stable.
This large repertoire of active plus inactive subunits suggests the possibility of a particularly rich network of regulatory protein-protein associations.
HIV/AIDS data came from mean HIV prevalence rates among pregnant women attending a longitudinally rich network of 19 ante-natal clinics (ANCs) where HIV surveillance has been conducted from 1994 to 2010.
