Code search doesn't work?

I am trying to find repositories with particular terraform module, i.e.:
"terraform-aws-modules/eks/aws"
An example:
https://github.com/search?q=%22terraform-aws-modules%2Feks%2Faws%22&type=code

but it looks like it doesn’t show me anything - the message is:

We couldn’t find any code matching ‘“terraform-aws-modules/eks/aws”’

But there is repo with the module I am looking for:
https://github.com/mudathir-lawals/kubely/blob/c4c3cb2d7508728e196de91ca5be56479372e783/resource-provisioning/modules/eks-clusters/eks-cluster.tf

Am I doing the search in wrong format ?

Any hint with this ?