Perhaps you should try some spelling variations:
"association of knight's gross recipients" » "association of knight's grosse recipients" (Expand Search)
"association of knight's bross recipients" » "association of knight's brost recipients" (Expand Search), "association of knight's ross recipients" (Expand Search)

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• Performing a fuzzy search may retrieve terms with similar spellings: (("association of knight's gross recipients") OR ("association of knight's bross recipients"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"association of knight's gross recipients\") OR (\"association of knight's bross recipients\"))".
• Removing quotes may allow a broader search: (( association of knight's gross recipients ) OR ( association of knight's bross recipients )).
• Adding a wildcard symbol may retrieve word variants: (("association of knight's gross recipients") OR ("association of knight's bross recipients"))*.