Perhaps you should try some spelling variations:
ruhr » ruhe (Expand Search), rohr (Expand Search)
lohr » rohr (Expand Search)
mohr » mehr (Expand Search), moor (Expand Search), rohr (Expand Search)
mohn » sohn (Expand Search), hohn (Expand Search), bohn (Expand Search)
lahr » jahr (Expand Search), lahn (Expand Search)
bahr » baehr (Expand Search), bahre (Expand Search), jahr (Expand Search)
lehr » leer (Expand Search), mehr (Expand Search)
university » universitat (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 nuhr) OR ((lohr OR (mohr OR mohn)) OR ((lahr OR bahr) OR lehr))) university bochum~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ruhr OR nuhr) OR ((lohr OR (mohr OR mohn)) OR ((lahr OR bahr) OR lehr))) university bochum".
• Adding a wildcard symbol may retrieve word variants: ((ruhr OR nuhr) OR ((lohr OR (mohr OR mohn)) OR ((lahr OR bahr) OR lehr))) university bochum*.