Talvez deva tentar algumas variações de ortografia:
retina nerve » retinal nerve (Expandir a Pesquisa)
neural case » neutral case (Expandir a Pesquisa), neural causes (Expandir a Pesquisa), neural phase (Expandir a Pesquisa)
bent nerve » absent nerve (Expandir a Pesquisa), mental nerve (Expandir a Pesquisa), dental nerve (Expandir a Pesquisa)
nerve cat » nerve can (Expandir a Pesquisa), nerve case (Expandir a Pesquisa), nerve c (Expandir a Pesquisa)
j retina » j reina (Expandir a Pesquisa), j retana (Expandir a Pesquisa), j reino (Expandir a Pesquisa)
cat dis » cat did (Expandir a Pesquisa), cat diets (Expandir a Pesquisa), cat diet (Expandir a Pesquisa)
nerve a » nerve _ (Expandir a Pesquisa)
i bent » i benth (Expandir a Pesquisa), i benet (Expandir a Pesquisa), i bento (Expandir a Pesquisa)
a des » a dos (Expandir a Pesquisa), a del (Expandir a Pesquisa)
recurrent » recurrence (Expandir a Pesquisa)

You can also try:

• Europeana
• Digital Public Library of America
• CORE

Pode obter mais resultados ajustando a pesquisa.

• Performing a fuzzy search may retrieve terms with similar spellings: (((( a recurrent neural case due ) or ( i bent nerve cat dis ))) or ( j retina nerve a des ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( a recurrent neural case due ) OR ( i bent nerve cat dis ))) OR ( j retina nerve a des )).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( a recurrent neural case due ) or ( i bent nerve cat dis ))) or ( j retina nerve a des ))*.