Perhaps you should try some spelling variations:
"john jennings sven" » "john dennis sven", "john jennings ken", "john jennings len", "john pennings steven"
"john hanning sven" » "john harding sven", "john hawkins sven", "john rannie sven"
"john dunning sven" » "john dunton sven", "john dennis sven", "john duncan sven", "john dunning john", "john dunning ted", "john running svm"

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (((("john hanning sven") OR ("john dunning sven"))) OR ("john jennings sven")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"john hanning sven\") OR (\"john dunning sven\"))) or (\"john jennings sven\"))".
• Removing quotes may allow a broader search: (((( john hanning sven ) OR ( john dunning sven ))) or ( john jennings sven )).
• Adding a wildcard symbol may retrieve word variants: (((("john hanning sven") OR ("john dunning sven"))) or ("john jennings sven"))*.