Perhaps you should try some spelling variations:
gebhardt » gerhard (Expand Search)
erhard » gerhard (Expand Search)
ebebgerhardt » ebebggerhardt (Expand Search), eberhardt (Expand Search)
ebggerhardt » ebgggerhardt (Expand Search), eberhardt (Expand Search)
engelhardt » engelhard (Expand Search)
hauptmann" » hartmann" (Expand Search)
herrmann" » hermann" (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: "((gebhardt OR erhard) OR ((ebebgerhardt OR ebggerhardt) OR engelhardt)) (hauptmann" OR herrmann")~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "\"((gebhardt OR erhard) OR ((ebebgerhardt OR ebggerhardt) OR engelhardt)) (hauptmann\" OR herrmann\")".
• Removing quotes may allow a broader search: ((gebhardt OR erhard) OR ((ebebgerhardt OR ebggerhardt) OR engelhardt)) (hauptmann OR herrmann ).
• Adding a wildcard symbol may retrieve word variants: "((gebhardt OR erhard) OR ((ebebgerhardt OR ebggerhardt) OR engelhardt)) (hauptmann" OR herrmann")*.