"the contribution that" is correct and can be used in written English.
For example, you could say, "I am proud of the contribution that I made to the project."
It's the contribution that is important, not what you sing".
He neither suffered nor enjoyed any scandal surrounding the contribution that defined him as a modernist.
This would free it to celebrate the contribution that free movement of workers has made.
The contribution that could potentially be made by users whilst accessing services is often overlooked.
He can't make the contribution that others were making.
Another tendency is to belittle the contribution that amateurs make.
I can only be thankful for the contribution that it made to my life".
"They are there for their expertise, experience and the contribution that they can make".
But he added he would like to see more recognition of the contribution that business makes.
He called it "innovative" in acknowledging "the contribution that stay-at-home parents make".
"You have to go forth and claim the contribution that our forefathers have made".
