Perhaps you should try some spelling variations:
universitat bochum » universitat bonn (Expand Search)
ruhr » ruhe (Expand Search), nuhr (Expand Search), rohr (Expand Search)
mehr » meer (Expand Search)
moor » mohr (Expand Search)
mohn » sohn (Expand Search), bohn (Expand Search), mahn (Expand Search)
john » sohn (Expand Search), joh (Expand Search), bohn (Expand Search)
sjjohnee » sjsohnee (Expand Search), sjjohee (Expand Search), sjbohnee (Expand Search)
hohn » hahn (Expand Search), sohn (Expand Search), huhn (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: (ruhr OR (((mehr OR moor) OR ((mohn OR john) OR ohne)) OR (hohn OR sjjohnee))) universitat bochum~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(ruhr OR (((mehr OR moor) OR ((mohn OR john) OR ohne)) OR (hohn OR sjjohnee))) universitat bochum*".