You can find a new angle and use that to write about.
You can also analyze another study and create your own perception about it. It is necessary for you to make sure that you are bringing your own perspective to the table and not just reiterating the case that they already presented.
Another direction to go in is to choose a topic that you would like to learn about.
Maybe there is a subject that you know only a little about and you want to learn more about.
Some writing services will give examples of dissertations to show the quality of work they can provide. It will help you stay organized and allow you to keep from going on a tangent.
It can also help you decide what supporting facts to use and which of them to talk about first.
That means that you are expected to write a paper that adds to the value of learning for yourself and your readers while being something that you created.
The final product should be of a quality that could be published or used in the future as a valuable resource to others.
Preparing Business dissertations without appropriate topic can prove to be an entirely nightmarish experience.
The significance of suitable business dissertation topics can only be understood by the final year students of B-school, who are supposed to pick one, that too, real soon.