Perhaps you should try some spelling variations:
"hermann christian auch" » "herrmann christian auch" (Expand Search), "hermann christian mauch" (Expand Search)
"johann christian buch" » "hans christian buch" (Expand Search), "von christian buch" (Expand Search), "doring christian buch" (Expand Search)
"johann christian auch" » "hans christian auch" (Expand Search), "von christian auch" (Expand Search), "doring christian auch" (Expand Search), "johann christian mauch" (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: "((\"johann christian buch\") OR (((\"johann christian auch\") OR (\"hermann christian auch\"))))~".
• Removing quotes may allow a broader search: (( johann christian buch ) OR ((( johann christian auch ) OR ( hermann christian auch ))))~.
• Adding a wildcard symbol may retrieve word variants: (("johann christian buch") OR ((("johann christian auch") OR ("hermann christian auch"))))*.