The phrase "carefully control" is correct and usable in written English.
You can use it whenever you want to emphasize the importance of handling a situation, person, or thing with great care. For example: "We must carefully control our spending in order to stay on budget."
Will they carefully control risks?
I very carefully control the lighting, sound and decor.
Combining individual data allows for the authors to more carefully control for other factors that could be affecting the associations.
"We carefully control the number of employees who have access to our systems, and we regularly upgrade our security controls.
What is needed are dedicated studies of class-size effects which carefully control for potentially confounding factors like pupil and teacher characteristics.
In a process known as wet cleaning, garments are washed with water and biodegradable detergents in computerized machines that carefully control variables like agitation.
They found that when you carefully control for other things, more money actually does make people a bit happier -- but its influence is swamped by non-pecuniary factors.
"We have an obligation to respect their civilization, culture and people, which is why we carefully control the distribution of these cell lines".
Although Jackson is the lesser artist, the two have some affinities: both are singers of average ability who dance well and carefully control their public images.
Mr. Romney's campaign has sought to carefully control his interactions with the news media this year as it has tried to keep a grip on front-runner status.
Unlike many countries that carefully control dinosaur fossils found on public and private lands, the United States restricts the collecting of fossils only on public lands.
