The phrase "about various things" is correct and usable in written English.
It can be used when discussing a range of topics or subjects without specifying each one.
Example: "The book covers a wide array of topics, providing insights about various things that interest the reader."
Alternatives: "regarding different matters" or "concerning multiple topics".
He and his daughter talk about various things.
He worries all night about various things: his wife, his children, his job, his health.
We talked about various things, but mostly about books and writers.
Well, in the book we talk about various things that we might think about doing that might make a difference.
Between paranormal revelations, Clara and her ex, Letta, argue mawkishly about various things, including systemic racism (Letta and her children are black).
She kept asking the young man seated next to her what he thought about various things she was pulling out of that folder.
Representative John Yarmuth, 60, a Democrat from Kentucky, recently talked about the pedometer challenge during a speech on preventative health care in Louisville, Ky. "We were talking about the various things he could talk about," said Stuart Perelmuter, Mr. Yarmuth's press secretary.
Writer tells about the various things: strange, unpalatable, items that symposiasts, present or past, had consumed--from ground bats' wings to frogs' ovaries.
"There's not a lot of understanding [among social work students] about the various things you can do with older adults," she says.
A serial entrepreneur, Seay was diagnosed with cancer in late 2010, and began to think about the various things people would want to share with their children, friends, family and loved ones.
The mass of evidence generated over more than a decade of experimentation has told researchers a lot about the various things that are likely to determine how well it works - and the biggest trial of all, the German Lohafex project, suggested it might not work at all.
