Perhaps you should try some spelling variations:
ruhr » ruhe (Expand Search), nuhr (Expand Search), rohr (Expand Search)
mohr » mehr (Expand Search), lohr (Expand Search), mohn (Expand Search)
john » sohn (Expand Search), joh (Expand Search), bohn (Expand Search), jsohn (Expand Search), jbohn (Expand Search), jmohn (Expand Search)
johne » sohne (Expand Search), johe (Expand Search), bohne (Expand Search), jsohne (Expand Search), jbohne (Expand Search), jmohne (Expand Search), joane (Expand Search)
ohn » sohn (Expand Search), bohn (Expand Search), mohn (Expand Search)
hohn » hsohn (Expand Search), hbohn (Expand Search), hmohn (Expand Search), hahn (Expand Search), sohn (Expand Search)
ohne » sohne (Expand Search), bohne (Expand Search), mohne (Expand Search)
university » universitat (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 ((john OR ohn) OR johne)) OR ((hohn OR huhn) OR ohne))) university bochum~".
• Adding a wildcard symbol may retrieve word variants: (ruhr OR ((mohr OR ((john OR ohn) OR johne)) OR ((hohn OR huhn) OR ohne))) university bochum*.