Perhaps you should try some spelling variations:
universitat bochum » universitat bonn (Expand Search)
ruhr » ruhe (Expand Search), nuhr (Expand Search), rohr (Expand Search)
lohr » lehr (Expand Search), lahr (Expand Search), rohr (Expand Search)
mohr » mehr (Expand Search), mohn (Expand Search), moor (Expand Search)
john » sohn (Expand Search), joh (Expand Search), johne (Expand Search), jsohn (Expand Search), jmohn (Expand Search)
sjohn » ssohn (Expand Search), sjoh (Expand Search), sjohne (Expand Search), sjsohn (Expand Search), sjmohn (Expand Search), sohn (Expand Search)
ohn » ohne (Expand Search), sohn (Expand Search), mohn (Expand Search)
bohn » bohne (Expand Search), bsohn (Expand Search), bmohn (Expand Search)
hohn » hohne (Expand Search), hsohn (Expand Search), hmohn (Expand Search), hahn (Expand Search), sohn (Expand Search), huhn (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 (((lohr OR mohr) OR ((john OR ohn) OR bohn)) OR (hohn OR sjohn))) universitat bochum~".
• Adding a wildcard symbol may retrieve word variants: (ruhr OR (((lohr OR mohr) OR ((john OR ohn) OR bohn)) OR (hohn OR sjohn))) universitat bochum*.