"concurs to" is correct and usable in written English.
You can use it when you want to express agreement with something. For example: "John concurs to the plan to have a gathering this weekend."
Each day, all this concurs to "over 1,000 stories published" that will translate into 1.4 million Facebook referrals and 250,000 comments.
"The richness of the art, the exquisite taste of the vocal part, the excellence of the voices, the justness of the execution, everything in these delightful concerts concurs to produce an impression... from which I am of opinion no heart is secure".
It is difficult to pin the film's achievement to one thing in particular, as everything concurs to exceptional brio: the pace, the characters' gaze, the silences, the lies we know and the truths we ignore, Smiley's dogged determination and physical fatigue, and the central question of loyalty and idealism in the most pragmatic of societies.
As corresponding to experimental results, higher σc value concurs to larger depth of focus.
Neuroscientific research on the processing of proper names and common nouns concurs, to some extent.
This type of errors concurs to limit the accuracy and range of the extrapolation algorithms to be shortly derived.
