Searching for papers from a specific conference
It is always better to search a single article to know how the citation manager in Google Scholar has extracted the information. You can then use the information to search the full proceeding. 

For example, an article looks like this:


  Filippas, A., &amp; Horton, J. J. (2017, June). The Tragedy of your Upstairs Neighbors: Is the Negative Externality of Airbnb Internalized?. In Proceedings of the 2017 ACM Conference on Economics and Computation (pp. 537-538). ACM.


The required answer is here. You can see the full set of articles in this link under Google Scholar.

I hope you got the required answer.