To find the end user for your domain, google search the keywords separated by a space.
For example, if the domain is CraveMoney.com, then to find the end user just google search 'crave money'
The top search results are the people to approach.
Take the top 30 websites, get their email address via WhoIs and send them an email regarding your interest in selling the domain.
They may get back to you with some offer.
P.S. : I have sold around 20 domains via this method at an unexpectedly good price.
For example, if the domain is CraveMoney.com, then to find the end user just google search 'crave money'
The top search results are the people to approach.
Take the top 30 websites, get their email address via WhoIs and send them an email regarding your interest in selling the domain.
They may get back to you with some offer.
P.S. : I have sold around 20 domains via this method at an unexpectedly good price.