Perhaps you should try some spelling variations:
german » gehrmann (Expand Search)
germani » gehrmanni (Expand Search), germania (Expand Search), germany (Expand Search), gehrmann (Expand Search)
germanii » gehrmannii (Expand Search), germaniai (Expand Search), germanyi (Expand Search), gehrmanni (Expand Search), germania (Expand Search)
germanen » gehrmannen (Expand Search), gehrmann (Expand Search), dermann (Expand Search), germania (Expand Search)
germans » gehrmanns (Expand Search)
hermanns » herrmann (Expand Search), dermann (Expand Search), lehmanns (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: ((german OR hermann) OR (hermanns OR ((germani OR (germanii OR germanen)) OR germans))) empire~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((german OR hermann) OR (hermanns OR ((germani OR (germanii OR germanen)) OR germans))) empire*".