The phrase "a much larger operation" is correct and usable in written English.
You can use it when discussing the scale or extent of a project, business, or activity in comparison to something smaller.
Example: "The initial project was just a pilot, but it has now evolved into a much larger operation that spans multiple countries."
Alternatives: "a significantly bigger endeavor" or "a far more extensive undertaking".
Mr. Bulger, he suggested, was just part of a much larger operation and it was the federal government that should be held accountable.
Ambitious home baking business owners can use the current craze for TV food programmes to expand their small bakery businesses into a much larger operation, as Allison Whitmarsh, founder of cake firm ProperMaid has done.
As part of UTStarcom, the former Audiovox employees will be moving from a company with 1,000 employees, almost all on Long Island, to a much larger operation of nearly 7,000 employees, most in China.
Now it is the headquarters of a much larger operation, owned by Leslie Green, its third proprietor, who maintains the original standards, making all the knishes for this shop and his wholesale trade; he even ships them by air around the country.
He ended up building two wireless stations: a small testing station consisting of two huts at Pen Olver near Housel Bay to the east of Lizard Point, and a much larger operation six miles away at Poldhu on the western fringes of the Lizard.
Moderna's leaders like to point out that although the company feels cozy and young like a startup, it has the resources of a much larger operation.
The caucus has a political fund-raising arm subject to federal limitations, but it has a separate, much larger operation that collects corporate and union money for nonprofits that are supposed to provide those scholarships and do other good works.
Obama has told his aides that a no-fly zone would require a much larger military operation than its proponents believe.
Although Torrisi Italian Specialties has just 25 seats and charges only $50 for a fixed meal of at least seven small- and medium-size courses, it marshals the ambition of a much larger, fancier operation.
"That's where they will get into a much larger scale operation.
Chevron has much larger operations elsewhere in Latin America, and the plaintiffs' strategy of pursuing the company across the region could open a contentious new phase in the case — one that would test Ecuador's political ties with its neighbors and involve some of Washington's most prominent lobbyists and lawyers.
