The phrase "about certain subjects" is correct and usable in written English.
It can be used when discussing topics or themes that are specific or particular in nature.
Example: "The professor gave a lecture about certain subjects that are often overlooked in the curriculum."
Alternatives: "regarding specific topics" or "concerning particular themes".
As it always is if you don't feel you can even talk about certain subjects with your own life partner.
He doubts that the people are really talking about certain subjects that the March issue suggests they are.
He was intrigued by employees who knew more about certain subjects than their bosses or colleagues but who still had to cooperate with others in a large organization.
"There have always been rumors because I have written about certain subjects that that is what I am coming to do here," he said.
For one thing, he said, "we do think we are in this important enterprise together". And he said "we're often the only people we can talk to about certain subjects," such as politics.
DeLillo has said that "the act of writing for me is a concentrated form of thinking… I don't know what I think about certain subjects until I sit down and try to write about them".
If the snob is really set in his ways about certain subject, then there's no point in trying to fight him on the point.
No matter their interest, they can write about it (excluding certain subjects, like porn) and if they publish their work on a blog, these kids have a built in audience.
It too seeks to educate about and generate discussion of certain subjects, but those subjects have no far-reaching implications for anyone.
Here we might hope to appeal to Nelson Goodman's classic account of "absolute aboutness," which implies that logical truths are not absolutely about anything (1961, 256), or to David Lewis's (1988) account of what it is for a proposition to be about a certain subject matter, which implies that logical truths are about every subject matter indifferently.
