Perhaps you should try some spelling variations:
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)
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 (((lohr OR mohr) OR ((john OR ohn) OR bohn)) OR (hohn OR sjohn))) university bochum~".
• Adding a wildcard symbol may retrieve word variants: (ruhr OR (((lohr OR mohr) OR ((john OR ohn) OR bohn)) OR (hohn OR sjohn))) university bochum*.