Perhaps you should try some spelling variations:
"pottinger" » "gottinger", "gottingen", "spottinger", "blottinger", "clottinger"
"spottinger" » "sgottinger", "sgottingen", "stottinger", "spotting", "gottinger", "sspottinger", "sblottinger", "sclottinger"
"potting" » "spotting", "blotting", "clotting"

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