Perhaps you should try some spelling variations:
"ottinger" » "pottinger", "gottingen", "luttinger"
"gottinger" » "gpottinger", "ggottingen", "gluttinger", "gottingen"
"spotting" » "plotting", "blotting"
"sporting" » "supporting", "reporting", "importing"

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: (("ottinger" OR "gottinger") OR ("spotting" OR "sporting")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"ottinger\" OR \"gottinger\") or (\"spotting\" or \"sporting\"))".
• Removing quotes may allow a broader search: (( ottinger OR gottinger ) or ( spotting or sporting )).
• Adding a wildcard symbol may retrieve word variants: (("ottinger" OR "gottinger") or ("spotting" or "sporting"))*.