Perhaps you should try some spelling variations:
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• If you are trying to use Boolean operators, they must be ALL CAPS: (("underwater archaeology political participation rome studies") OR ((((("underwater archaeology female participation asian studies") OR ("underwater archaeology female participation iran studies"))) OR ("underwater archaeology two participation _ studies"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"underwater archaeology political participation rome studies\") or (((((\"underwater archaeology female participation asian studies\") OR (\"underwater archaeology female participation iran studies\"))) or (\"underwater archaeology two participation _ studies\"))))~".
• Removing quotes may allow a broader search: (( underwater archaeology political participation rome studies ) or ((((( underwater archaeology female participation asian studies ) OR ( underwater archaeology female participation iran studies ))) or ( underwater archaeology two participation _ studies ))))~.
• Adding a wildcard symbol may retrieve word variants: (("underwater archaeology political participation rome studies") or ((((("underwater archaeology female participation asian studies") OR ("underwater archaeology female participation iran studies"))) or ("underwater archaeology two participation _ studies"))))*.