Perhaps you should try some spelling variations:
"rohr universitat bochum" » "rohr universitat bonn" (Expand Search), "der universitat bochum" (Expand Search)
"lohr university bochum" » "lahr university bochum" (Expand Search), "mohr university bochum" (Expand Search)
"lehr university bochum" » "leer university bochum" (Expand Search), "mehr university bochum" (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: (("rohr universitat bochum") OR ((("lohr university bochum") OR ("lehr university bochum"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"rohr universitat bochum\") OR (((\"lohr university bochum\") OR (\"lehr university bochum\"))))".
• Removing quotes may allow a broader search: (( rohr universitat bochum ) OR ((( lohr university bochum ) OR ( lehr university bochum )))).
• Adding a wildcard symbol may retrieve word variants: (("rohr universitat bochum") OR ((("lohr university bochum") OR ("lehr university bochum"))))*.