"with much concern" is correct and usable in written English.
It can be used when expressing a feeling of worry. For example, "I watched as my child walked away from me with much concern."
It has been remarkable that the Bulldogs have found such success in recent seasons with so much concern over the key positions.
The course Mr. Bush charted over his final hours on the campaign trail, plotted with as much concern for symbolism as for raw electoral arithmetic, left no doubt about where he placed the blame for that atmosphere.
He viewed the workers with about as much concern as you might give to a fly you flick off your desk or swat on a hot summers day.
Why? There's too much concern with sparing the feelings of those who make peace with shoddiness and imperfection.
WWF maintains that to protect biodiversity, we need regulatory frameworks worldwide to prevent the use of chemicals with properties that cause much concern, certainly where safer alternatives exist.
As with so much concerning Kafka – his strange life, and stranger fiction – we are almost compelled to begin with the observations of Max Brod, his friend, sanctifier and – some might argue – crypto-amanuensis.
Still some European countries (UK [25], Germany [26], France [27], Austria) focus mainly on economic efficiency and growth, with much less concern for environment and equity.
As we now ponder cuts to the defense budget, why not stop this military sonar's expansion until we have enough sound science and environmental research to use it judiciously and with much greater concern for all life?
