Talvez debería tentar con algunhas variantes ortográficas:
instancias » instancia (Expandir procura)
academicas." » academica." (Expandir procura), academico." (Expandir procura), academia." (Expandir procura), academicoas." (Expandir procura), academicaas." (Expandir procura), academiaas." (Expandir procura)
academic." » academico." (Expandir procura), academica." (Expandir procura), academia." (Expandir procura)
academicos." » academicoos." (Expandir procura), academicaos." (Expandir procura), academiaos." (Expandir procura)
academias." » academia." (Expandir procura), academics." (Expandir procura), academico." (Expandir procura)

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• Performing a fuzzy search may retrieve terms with similar spellings: "(sustancias OR instancias) (((academicas." OR academic.") OR academicos.") OR academias.")~.
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• Removing quotes may allow a broader search: (sustancias OR instancias) (((academicas. OR academic. ) OR academicos. ) OR academias. ).
• Adding a wildcard symbol may retrieve word variants: "(sustancias OR instancias) (((academicas." OR academic.") OR academicos.") OR academias.")*.