Perhaps you should try some spelling variations:
"hans woehler" » "hands woehler" (Expand Search), "has woehler" (Expand Search), "hand woehler" (Expand Search), "hans koehler" (Expand Search), "hans jkoehler" (Expand Search)
"hans rkoehler" » "hands rkoehler" (Expand Search), "has rkoehler" (Expand Search), "hand rkoehler" (Expand Search), "hans koehler" (Expand Search), "hans jkoehler" (Expand Search)
"hans mkohler" » "hands mkohler" (Expand Search), "has mkohler" (Expand Search), "hand mkohler" (Expand Search)
"hans kohler" » "hands kohler" (Expand Search), "has kohler" (Expand Search), "hand kohler" (Expand Search)

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"hans woehler\") OR (((((\"hans rkoehler\") OR (\"hans mkohler\"))) OR (\"hans kohler\"))))~".
• Removing quotes may allow a broader search: (( hans woehler ) OR ((((( hans rkoehler ) OR ( hans mkohler ))) OR ( hans kohler ))))~.
• Adding a wildcard symbol may retrieve word variants: (("hans woehler") OR ((((("hans rkoehler") OR ("hans mkohler"))) OR ("hans kohler"))))*.