Talvez deva tentar algumas variações de ortografia:
recurrent nerve » recurrent neural (Expandir a Pesquisa)
absent native » present native (Expandir a Pesquisa), absent nails (Expandir a Pesquisa), absent nerve (Expandir a Pesquisa)
native system » native systems (Expandir a Pesquisa), negative system (Expandir a Pesquisa), active system (Expandir a Pesquisa)
2 recurrent » a recurrent (Expandir a Pesquisa), 1 recurrent (Expandir a Pesquisa)
system dcus » system dcs (Expandir a Pesquisa), system des (Expandir a Pesquisa), system dgps (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 a (Expandir a Pesquisa)
_ absent » _ absence (Expandir a Pesquisa)
j bent » j benet (Expandir a Pesquisa), j bento (Expandir a Pesquisa), j bena (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: (( 2 recurrent nerve cat due ) or ((( j bent nerve cat due ) or ( _ absent native system dcus ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( 2 recurrent nerve cat due ) OR ((( j bent nerve cat due ) OR ( _ absent native system dcus )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( 2 recurrent nerve cat due ) or ((( j bent nerve cat due ) or ( _ absent native system dcus ))))*.