Talvez deva tentar algumas variações de ortografia:
recurrence nerve » recurrent nerve (Expandir a Pesquisa), recurrence curve (Expandir a Pesquisa), recurrence degree (Expandir a Pesquisa)
_ recurrence » _ recurrent (Expandir a Pesquisa)
nerve system » nervous system (Expandir a Pesquisa), drive system (Expandir a Pesquisa)
denham nerve » dental nerve (Expandir a Pesquisa), dental nerves (Expandir a Pesquisa), dentin nerve (Expandir a Pesquisa)
bent nerve » absent nerve (Expandir a Pesquisa), mental nerve (Expandir a Pesquisa), dental nerve (Expandir a Pesquisa)
system dis » system dias (Expandir a Pesquisa), system dcs (Expandir a Pesquisa), system di (Expandir a Pesquisa)
case disc » cause disc (Expandir a Pesquisa), case di (Expandir a Pesquisa), case dose (Expandir a Pesquisa)
j denham » d denham (Expandir a Pesquisa), a denham (Expandir a Pesquisa), l denham (Expandir a Pesquisa)
nerve c » nerve cn (Expandir a Pesquisa), nerve _ (Expandir a Pesquisa), nerve a (Expandir a Pesquisa)
i bent » i benth (Expandir a Pesquisa), i benet (Expandir a Pesquisa), i bento (Expandir a Pesquisa)
c diet » c dietz (Expandir a Pesquisa), hc diet (Expandir a Pesquisa), c diez (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 bent nerve c diet ) OR ( _ recurrence nerve system dis ))) OR ( j denham nerve case disc ))~".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( i bent nerve c diet ) OR ( _ recurrence nerve system dis ))) OR ( j denham nerve case disc ))*.