Perhaps you should try some spelling variations:
"Elgar original references" » "Elgar origin references", "Elgar origins references", "Elgar original defences"
"Elgar kriging references" » "Elgar origin references", "Elgar origins references", "Elgar writing references"
elgar original » angr original, einer original
"elgar marginal references" » "near marginal references"

Try widening your search to All Fields.

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• If you are trying to use Boolean operators, they must be ALL CAPS: (((("Elgar original references") OR ("Elgar kriging references"))) OR ("elgar marginal references")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"Elgar original references\") OR (\"Elgar kriging references\"))) or (\"elgar marginal references\"))".
• Removing quotes may allow a broader search: (((( Elgar original references ) OR ( Elgar kriging references ))) or ( elgar marginal references )).
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