"collectively found" is a correct and usable phrase in written English.
You can use it to describe a situation in which a group of people join together to discover or accomplish something. For example, "After several months of research, we collectively found a solution to the problem."
By nightfall, government agencies and nonprofit organizations had collectively found a shuttle solution: the city's public buses.
Then there were four trials looking at comprehension, which found only weak evidence of benefit, and three trials on spelling, which collectively found no benefit for phonics.
While a significant positive relationship was identified between child education level and resilience, demographic variables were not collectively found to be strong predictors of resilience levels, as compared with measures of stress, mental health and wellbeing.
"We have collectively found the strength to fight against this death sentence placed on our company from the very beginning," Mr. Marchionne said to the cheers of hundreds of workers at the plant in Sterling Heights, Mich.
We reviled a generation of veterans - those from the Vietnam conflict - because they fought in a war that we collectively found unpopular.
Several types of avoided emissions were considered separately and were collectively found to be notable relative to net emissions.
Global competition is intense and, over time, specialized roles have evolved as millions of players collectively find optimal strategies.
It has been noted in this space that New Yorkers should, collectively, find it tough to look in the mirror each morning without wincing.
But, for the foreseeable future, the past will continue to be used as the imperfect guarantor of those values that we collectively find difficult to claim for the present.
For example, the ants of a colony collectively find the shortest path to a food source.
The true power here will be when both sides can collectively find a way to make this work.
