The phrase "a more subtle form" is correct and usable in written English.
It can be used when discussing variations or types of something that are less obvious or more nuanced.
Example: "The artist's latest work represents a more subtle form of expression compared to his earlier, more direct pieces."
Alternatives: "a more nuanced version" or "a more refined type".
Street crime usually takes a more subtle form.
The excerpts from Mrs. Parish's journals reveal a more subtle form of manipulation, the art behind the decorator's art.
There is a more subtle form of bias, however, that a lot more of us are prone to.
You had to be". The excerpts from Mrs. Parish's journals reveal a more subtle form of manipulation, the art behind the decorator's art.
This is not because it was compromised by close encounters with other galaxies, but because a more subtle form of arrested development must have taken place.
Gov. George W. Bush has been resorting to a more subtle form of Asian-baiting in TV commercials to attack Vice President Al Gore.
Reaching new customers is key, but social media is a much more subtle form of advertising than placing a billboard in Times Square or running an ad during the Super Bowl.
In fact, the Liberals' attempt to wrap themselves in the UN Declaration without embracing its central right may constitute a new, more subtle form of extraction: the extraction from Indigenous territory of consent itself.
Those who made the schlep were greeted with a much more subtle form of sturm und drang.
Courageous media and bloggers are forced to practice self-censorship in self-defense against the drug cartels, while ubiquitous government advertising in print and electronic media is a much more subtle form of coercion.
This is a continuation of the more subtle form of anti-semitism that doesn't demonize Jews, but nevertheless questions why they couldn't be more like "real Americans" or "tough guys" who don't take any crap and give as good as they get?
