The phrase "in a clear manner" is correct and can be used in written English. It can be used when someone needs to emphasize clarity and conciseness in communication. For example, "Please explain your concerns in a clear manner so I can understand them better.".
The SEC's commissioners voted 3-2 on Wednesday to require publicly held companies to disclose "in a clear manner" more details about how executive pay compares to a company's total shareholder return; that is, the annual change in its stock price plus dividends.
We really push the fact that the claims need to be written in a clear manner".
It is difficult for us synesthetes to portray our visualisations and emotions in a clear manner as the variations differ from each individual.
You want to make sure it's as right as possible and written up in a form that reviewers would understand what you're trying to say, and do it in a clear manner so it's not subject to misinterpretation.
"It's rare that equality and love win out in such a clear manner," said Guillaume Bonnet, a French spokesman for All Out, an international gay rights group.
The Guardian reports that Sir Andrew Dilnot, Chief of the UK Statistics Authority, is to write to the department's leading statistician to request that they publish a greater volume of data in a clearer manner.
The bit error rate (BER) curves above allow us to perceive in a clearer manner the benefit of including the proposed algorithm into the system.
Ludwig does not simply clarify my doubts with English writing, it enlightens my writing with new possibilities
Simone Ivan Conte
Software Engineer at Adobe, UK