Perhaps you should try some spelling variations:
"heinrich reinhart" » "heinrich bernhard", "heinisch reinhard", "heinrich kleinert"
"heinrich freiherr" » "erich freiherr", "friedrich freiherr", "heinrich fiebiger"
"heinrich richard" » "heinrichs richard", "heinrich michael", "haubrich richard"

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