"demands regarding" is correct and usable in written English.
You might use this phrase to refer to specific requests with regard to a given subject. For example, "The new contract included demands regarding employee benefits."
In 1855 police commissioners stated their demands regarding working conditions in the Journal des commissaires.
The first topic under discussion will be their demands regarding peasants' access to land.
In the least years the demands regarding the accuracy of bent tubes has dramatically increased.
Customers' demands regarding the quality level of automobile vehicles are constantly increasing.
Perhaps providers will add a new category to their transparency reports for U.S. demands regarding non-U.S.
The government in Kabul would probably not agree to imposing Taliban demands regarding women or education everywhere.
On Friday, Mr. Berlusconi said his party had not made any demands regarding the name of the future president.
"Hollywood producers on Tuesday temporarily broke off contract talks with the Screen Actors Guild, calling its demands regarding DVD sales and online content 'unreasonable,'" the Associated Press reports.
He has carefully maintained that status throughout and has meticulously avoided making any demands regarding the casting, production or distribution of the movie.
"I think he's way off base," Speros A. Batistatos, president and chief executive of the convention authority, said of Mr. Scalf's demands regarding his great uncle's memory.
Time Warner has agreed to Disney's demands regarding the channels, but it has balked at the amount of money it says Disney is seeking.
