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• Performing a fuzzy search may retrieve terms with similar spellings: ((true OR ruhe) OR (lohr OR lahr)) university bochum~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((true OR ruhe) OR (lohr OR lahr)) university bochum".
• Adding a wildcard symbol may retrieve word variants: ((true OR ruhe) OR (lohr OR lahr)) university bochum*.