One Keyword per Ad Group. The reasons you are doing SKAGs are: 1) control over the Ad so you can manipulate the Ad Relevance & Landing Page experience elements of the Quality Score. Create an ad group for the keywords "plumber west virginia" then ad into the Ad Headline 1 "Plumber West Virginia" and then send people to a Landing Page with "Plumber West Virginia" text. 2) Search Term Performance Data in order to see search term patterns.