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

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

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