Perhaps you should try some spelling variations:
"german historical institutes moscow" » "germans historical institutes moscow" (Expand Search), "german historical instituts moscow" (Expand Search), "german historical institut moscow" (Expand Search), "german historical institutul moscow" (Expand Search), "german historical institutss moscow" (Expand Search), "german historical insitutes moscow" (Expand Search)
"gehrmann historical institute moscow" » "gehrmann historical institut moscow" (Expand Search), "gehrmann historical instituts moscow" (Expand Search), "gehrmann historical insitute moscow" (Expand Search)

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• Performing a fuzzy search may retrieve terms with similar spellings: (("german historical institutes moscow") OR ("gehrmann historical institute moscow"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"german historical institutes moscow\") OR (\"gehrmann historical institute moscow\"))".
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• Adding a wildcard symbol may retrieve word variants: (("german historical institutes moscow") OR ("gehrmann historical institute moscow"))*.