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