'thriving concern' is a correct and usable phrase in written English.
It is often used to refer to a business that is doing especially well and growing rapidly. For example: The company has become a thriving concern since its move to a larger facility last year.
Tess had shown her how much she knew, how much potential she had, giving her the confidence to open her own research firm, now a thriving concern.
Though Mr. Whitlock's shelves are filled with classic specimens, boxes of parts and repair catalogs — giving the impression of a thriving concern — customers haven't exactly been invading the place over the last few decades.
Damon Bae's commercial laundry on Third Avenue in East Harlem may never be mistaken for the kind of glamorous businesses found near Wall Street, Times Square or Madison Avenue, but it is a thriving concern in this neighborhood of three- and four-story buildings and vacant lots.
The foreclosure epidemic that swept the U.S. after the financial crash has ebbed, but the business of preying on struggling homeowners remains a thriving concern.
While elite-level handball struggles in the UK, the grassroots is thriving, but White is concerned youngsters will be driven out of the game as they grow older.
Hospitals have become a business and the primary concern is making a profit first in order to keep thriving and providing medical care.
Indeed, any doubt concerning the intrinsic efficiency of physician networks should be eliminated by the thriving rental PPO network business that has emerged to supplement inadequate networks.
Which is, frankly, the wrong take, because the athleisure movement is still thriving, as far as I'm concerned.
As such, we are gravely concerned that the proposed counter-extremism and safeguarding bill will feed the very commodity that the terrorists thrive on: fear".
Despite the concerns, the company's shares are thriving.
Taxonomy, or the branch of science concerned with classifying and naming species, is thriving, they write.
