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