Perhaps you should try some spelling variations:
"zinzendorf, nicola ludwig <graf von, 1700-1760>" » "zinzendorf, nicolaus ludwig <graf von, 1700-1760>", "zinzendorf, nikolaus ludwig <graf von, 1700-1760>", "zinzendorf, nicola lewis <graf von, 1700-1760>", "zinzendorf, nicola ludwig <graft von, 1700-1760>", "zinzendorf, nicola ludwig <gram von, 1700-1760>", "zinzendorf, nicola ludwig <graz von, 1700-1760>"
"zinzendorf, nicola ludwig <graw von, 1700-1760>" » "zinzendorf, nicolaus ludwig <graw von, 1700-1760>", "zinzendorf, nikolaus ludwig <graw von, 1700-1760>", "zinzendorf, nicola lewis <graw von, 1700-1760>", "zinzendorf, nicola ludwig <grad von, 1700-1760>", "zinzendorf, nicola ludwig <gral von, 1700-1760>", "zinzendorf, nicola ludwig <graz von, 1700-1760>"
"zinzendorf, nicola ludwig <gray von, 1700-1760>" » "zinzendorf, nicolaus ludwig <gray von, 1700-1760>", "zinzendorf, nikolaus ludwig <gray von, 1700-1760>", "zinzendorf, nicola lewis <gray von, 1700-1760>", "zinzendorf, nicola ludwig <gray con, 1700-1760>", "zinzendorf, nicola ludwig <array von, 1700-1760>", "zinzendorf, nicola ludwig <gray box, 1700-1760>"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (((("zinzendorf, nicola ludwig <graf von, 1700-1760>") OR ("zinzendorf, nicola ludwig <graw von, 1700-1760>"))) OR ("zinzendorf, nicola ludwig <gray von, 1700-1760>")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"zinzendorf, nicola ludwig <graf von, 1700-1760>\") OR (\"zinzendorf, nicola ludwig <graw von, 1700-1760>\"))) or (\"zinzendorf, nicola ludwig <gray von, 1700-1760>\"))".
• Removing quotes may allow a broader search: (((( zinzendorf, nicola ludwig <graf von, 1700-1760> ) OR ( zinzendorf, nicola ludwig <graw von, 1700-1760> ))) or ( zinzendorf, nicola ludwig <gray von, 1700-1760> )).
• Adding a wildcard symbol may retrieve word variants: (((("zinzendorf, nicola ludwig <graf von, 1700-1760>") OR ("zinzendorf, nicola ludwig <graw von, 1700-1760>"))) or ("zinzendorf, nicola ludwig <gray von, 1700-1760>"))*.