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• Performing a fuzzy search may retrieve terms with similar spellings: (("roman economic conditions 1250 b.c.-476 a.d.") or ((((((("home economics condition 30 b.c.-476 a.d.") OR ("homo economicuss condition 30 b.c.-476 a.d."))) or ("home economic foundations 30 b.c.-476 a.d."))) or ("home economics condition _ b.c.-476 a.d."))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("roman economic conditions 1250 b.c.-476 a.d.") OR ((((((("home economics condition 30 b.c.-476 a.d.") OR ("homo economicuss condition 30 b.c.-476 a.d."))) OR ("home economic foundations 30 b.c.-476 a.d."))) OR ("home economics condition _ b.c.-476 a.d.")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"roman economic conditions 1250 b.c.-476 a.d.\") or (((((((\"home economics condition 30 b.c.-476 a.d.\") OR (\"homo economicuss condition 30 b.c.-476 a.d.\"))) or (\"home economic foundations 30 b.c.-476 a.d.\"))) or (\"home economics condition _ b.c.-476 a.d.\"))))".
• Removing quotes may allow a broader search: (( roman economic conditions 1250 b.c.-476 a.d. ) or ((((((( home economics condition 30 b.c.-476 a.d. ) OR ( homo economicuss condition 30 b.c.-476 a.d. ))) or ( home economic foundations 30 b.c.-476 a.d. ))) or ( home economics condition _ b.c.-476 a.d. )))).
• Adding a wildcard symbol may retrieve word variants: (("roman economic conditions 1250 b.c.-476 a.d.") or ((((((("home economics condition 30 b.c.-476 a.d.") OR ("homo economicuss condition 30 b.c.-476 a.d."))) or ("home economic foundations 30 b.c.-476 a.d."))) or ("home economics condition _ b.c.-476 a.d."))))*.