Perhaps you should try some spelling variations:
"EDI mechanical material" » "EDI mechanics materials", "EDI mechanical metamaterials", "EDI mechanical scattering"
"EDI clinical material" » "EDI clinical trial", "EDI clinical potential", "EDI clinical trials"
edi mechanical » iii mechanical, i mechanical, ii mechanical
edi clinical » pdi clinical, nevi clinical, ii clinical

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• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"EDI mechanical material\") OR (\"EDI clinical material\"))".
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