The phrase "disagreements regarding" is correct and usable in written English.
You can use it when discussing a disagreement on a particular topic. For example: "The two sides had several disagreements regarding the proposed agreement."
In the Soviet era there were several disagreements regarding the status of the two territories' placement.
The royal governor, the Jamaican legislature, and Parliament had many bitter disagreements regarding taxation and government expenditures.
However, there is said to be disagreements regarding how Google should remunerate the labels for the bundled YouTube part of the subscription.
In an e-mail to Automotive News, the company attributed Mr. Fisker's resignation to "several major disagreements" regarding the business strategy of the company's executive management.
Temasek Holdings said that the board and Mr. Goodyear, an American and a former chief executive of the Anglo-Australian mining giant BHP Billiton, decided to end Mr. Goodyear's leadership transition because of disagreements "regarding certain strategic issues," which were not detailed.
Any disagreements regarding study eligibility were settled through discussion.
Yet, the literature indicates some disagreements regarding the nature of the intermediates.
A third independent investigator (RB) adjudicated any disagreements regarding paper inclusion.
Third, there are deep philosophical disagreements regarding the nature and even the existence of natural laws.
Disagreements regarding the extent and nature of such practical obligations have dominated the partialist-impartialist debate.
The literature search was performed independently by both authors, and disagreements regarding suitability for inclusion were resolved by discussion.
