Google Analytics: what Adwords campaigns took the user to this regular expression URL

The site of my clients can not be modified to follow the objectives, the platform they use will not allow it and the developer has no interest in coding anything to help.

I'm reaching the site at the end of the game, but Adwords and Analytics have been linked for some time, I just need to get a report on the AdWords campaigns that produce leads. Can I determine what they are doing by looking at the URLs, if it contains? Ask the user to send a contact request.

How can I create a report that shows me where this specific set of users came from? What adwords campaign, or direct / organic search etc.?

Thank you!