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• Performing a fuzzy search may retrieve terms with similar spellings: (((((((("rome's economic conditions 650 b.c.-476 a.d.") or ("rome's economic conditions 1150 b.c.-476 a.d."))) or ("rome's economic organisation _ b.c.-476 a.d."))) or ((("rome's economic foundations 31 b.c.-476 a.d.") OR ("rome's economic foundations 30 b.c.-476 a.d."))))) or ("roman economy connections _ b.c.-476 a.d."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((((((("rome's economic conditions 650 b.c.-476 a.d.") OR ("rome's economic conditions 1150 b.c.-476 a.d."))) OR ("rome's economic organisation _ b.c.-476 a.d."))) OR ((("rome's economic foundations 31 b.c.-476 a.d.") OR ("rome's economic foundations 30 b.c.-476 a.d."))))) OR ("roman economy connections _ b.c.-476 a.d.")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((((\"rome's economic conditions 650 b.c.-476 a.d.\") or (\"rome's economic conditions 1150 b.c.-476 a.d.\"))) or (\"rome's economic organisation _ b.c.-476 a.d.\"))) or (((\"rome's economic foundations 31 b.c.-476 a.d.\") OR (\"rome's economic foundations 30 b.c.-476 a.d.\"))))) or (\"roman economy connections _ b.c.-476 a.d.\"))".
• Removing quotes may allow a broader search: (((((((( rome's economic conditions 650 b.c.-476 a.d. ) or ( rome's economic conditions 1150 b.c.-476 a.d. ))) or ( rome's economic organisation _ b.c.-476 a.d. ))) or ((( rome's economic foundations 31 b.c.-476 a.d. ) OR ( rome's economic foundations 30 b.c.-476 a.d. ))))) or ( roman economy connections _ b.c.-476 a.d. )).
• Adding a wildcard symbol may retrieve word variants: (((((((("rome's economic conditions 650 b.c.-476 a.d.") or ("rome's economic conditions 1150 b.c.-476 a.d."))) or ("rome's economic organisation _ b.c.-476 a.d."))) or ((("rome's economic foundations 31 b.c.-476 a.d.") OR ("rome's economic foundations 30 b.c.-476 a.d."))))) or ("roman economy connections _ b.c.-476 a.d."))*.