The phrase "a central theme on" is not correct in standard written English.
It is typically used to introduce the main idea or focus of a discussion, but the preposition "on" is not appropriate in this context.
Example: "The novel explores a central theme of love and sacrifice throughout its narrative."
Alternatives: "a central theme of" or "a key theme regarding".
Why has 9/11 remained such a central theme on your show? A. Because it's firefighters.
A centerpiece of that address, and most likely a central theme on the campaign trail over the next nine months, was Mr. Obama's insistence that the 1 percent must pay up.
Foreign interference in Russian politics was a central theme on Thursday when President Vladimir V. Putin met with top officials at the Federal Security Service, congratulating them on "courageous acts to neutralize internal and external enemies".
In a speech that also touched on a central theme of his papacy and thought, the tension between faith and reason, Benedict said that "the ideological manipulation of religion, sometimes for political ends," was often "the real catalyst for tension and division, and at times even violence in society".
Both Mr. Bush and Mr. Cheney made the war on terror and the C.I.A. program a central theme of their speeches on Thursday, with Mr. Cheney suggesting that the agency's efforts had spared Americans another terrorist attack.
"Your Holiness, what must we do?" Benedict applauded mildly, before delivering a speech on St . Pauls conversion on the road to Damascus and alighting on a central theme of his papacy: in Europe, the pope said, "Gospel values are once again becoming countercultural, just as they were at the time of St. Paul".
The film, directed by Irish filmmaker Aoife McArdle, focuses on a central theme of unconventional friendship in the sleepy Texas town, presenting both another perspective on America's Italy and communicating 55DSL's own unique brand ethos.
As he toured southern Ohio by bus seeking to energize Republican supporters, Mr. Cheney hit hard on a central theme of the Bush campaign: that the president has a better grasp than Mr. Kerry of the threats facing the nation, and the will to stymie terrorists.
In 2016, we hosted a weeklong series of events focused on a central theme of paleontology, involving a lecture series, birthday party, Teachers workshop, art contests, and more.
Recently, several variations on a central theme of thioester production via an N to S acyl shift, that are mechanistically more similar to the intein system, have been reported (Scheme 1).
