Talvez deva tentar algumas variações de ortografia:
afferent nervous » afferent nerves (Expandir a Pesquisa), afferent neurons (Expandir a Pesquisa), afferent nerve (Expandir a Pesquisa)
nervous systems » nervous system (Expandir a Pesquisa)
systems das » systems dss (Expandir a Pesquisa), systems dds (Expandir a Pesquisa), systems data (Expandir a Pesquisa)
cent nerve » recent nerve (Expandir a Pesquisa), crest nerve (Expandir a Pesquisa), central nerve (Expandir a Pesquisa)
1 afferent » _ afferent (Expandir a Pesquisa), c afferent (Expandir a Pesquisa), i afferent (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 ct (Expandir a Pesquisa), nerve cut (Expandir a Pesquisa)
cat diet » cat diets (Expandir a Pesquisa), fat diet (Expandir a Pesquisa), eat diet (Expandir a Pesquisa)
case dis » case disc (Expandir a Pesquisa), case did (Expandir a Pesquisa), case di (Expandir a Pesquisa)
i cent » i cento (Expandir a Pesquisa), ai cent (Expandir a Pesquisa), ii cent (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.

• "As palabras AND, OR e NOT podem gerar pesquisas incorrectas; tente utilizar aspas": "(((( i cent nerve cat diet ) OR ( 1 afferent nervous systems das ))) OR ( j bent nerve case dis ))~".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( i cent nerve cat diet ) OR ( 1 afferent nervous systems das ))) OR ( j bent nerve case dis ))*.