Perhaps you should try some spelling variations:
"robert charles buildings und publications ;" » "robert charles building und publications ;" (Expand Search)
"robert charles buildings find publications ;" » "robert charles building find publications ;" (Expand Search)

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• Performing a fuzzy search may retrieve terms with similar spellings: (("robert charles buildings und publications ;") OR ("robert charles buildings find publications ;"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"robert charles buildings und publications ;\") OR (\"robert charles buildings find publications ;\"))".
• Removing quotes may allow a broader search: (( robert charles buildings und publications ; ) OR ( robert charles buildings find publications ; )).
• Adding a wildcard symbol may retrieve word variants: (("robert charles buildings und publications ;") OR ("robert charles buildings find publications ;"))*.