The phrase "a complex subject for" is correct and usable in written English.
It can be used when introducing a topic that is intricate or difficult to understand, often in an academic or analytical context.
Example: "The theory of relativity is a complex subject for many students in physics."
Alternatives: "a challenging topic for" or "a difficult issue for".
Catherine Davies, head of the IPO's education outreach department, which already produces teaching materials for GCSE students, admitted IP was a "complex subject" for small children and something of a challenge to make accessible and entertaining.
This is a complex subject for me because I am now a Brooklyn gentrifier.
Automatic identification of orthologs is a complex subject for which many sophisticated methods have been developed, the most suitable one being application dependent [ 37].
The ability to quickly take the temperature and visualize the health of your security infrastructure makes a complex subject accessible for everyone at the company.
Credit filmmaker Justin Simien with a brilliant view on a complex subject and for equating Quentin Tarantino's Django with Birth of a Nation and Gone With the Wind.
Regulation is a complex subject, has been for a century or more since President Teddy Roosevelt challenged the great oil and steel monopolists of America at their most predatory – his anti-trust regulation was pioneer work.
Few members of Congress have a strong grasp of the policy details for a complex subject like derivatives regulation, and support from typically liberal members can serve as a proxy for how noxious the bill is to progressive sensibilities.
For a few people (perhaps some politicians, pundits and reporters), a crisis and the concomitant rage is a matter of convenience -- a crisis attracts voters and readers in a way that rational discourse does not, especially for a complex subject like education.
When students who had used the podcasts were asked why they did so, all participants described revisiting the lecture so as to get a fuller comprehension of what they felt was a complex subject as a main reason for use.
Highly recommended, "Reagan: American Icon" turns a complex subject into a readable narrative suitable for anyone interested in the life and presidency of Ronald Reagan.
Artificial intelligence is a complex subject, and some answers have been edited for brevity.
