Perhaps you should try some spelling variations:
universitat bochum » universitat bonn (Expand Search)
ruhr » ruhe (Expand Search), nuhr (Expand Search), rohr (Expand Search)
mohr » mehr (Expand Search), lohr (Expand Search), moor (Expand Search)
mohn » hohn (Expand Search), bohn (Expand Search), john (Expand Search), mohne (Expand Search), mhohn (Expand Search), mbohn (Expand Search)
ohn » ohne (Expand Search), hohn (Expand Search), bohn (Expand Search)
sohn » sohne (Expand Search), shohn (Expand Search), sbohn (Expand Search)
hbohn » hbohne (Expand Search), hbhohn (Expand Search), hbbohn (Expand Search), hohn (Expand Search), bohn (Expand Search)
sjjohn » sjjohne (Expand Search), sjjhohn (Expand Search), sjjbohn (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: "(ruhr OR ((mohr OR ((mohn OR ohn) OR sohn)) OR (hbohn OR sjjohn))) universitat bochum~".
• Adding a wildcard symbol may retrieve word variants: (ruhr OR ((mohr OR ((mohn OR ohn) OR sohn)) OR (hbohn OR sjjohn))) universitat bochum*.