Talvez deva tentar algumas variações de ortografia:
benign nerves » benign nerve (Expandir a Pesquisa), benign nevus (Expandir a Pesquisa), benign nevi (Expandir a Pesquisa)
centner nerve » central nerve (Expandir a Pesquisa), cancer nerve (Expandir a Pesquisa), letter nerve (Expandir a Pesquisa)
nerves based » curves based (Expandir a Pesquisa)
nerve cause » nerve caused (Expandir a Pesquisa), nerve case (Expandir a Pesquisa), nerve course (Expandir a Pesquisa)
bent nerve » absent nerve (Expandir a Pesquisa), mental nerve (Expandir a Pesquisa), dental nerve (Expandir a Pesquisa)
based disc » based disk (Expandir a Pesquisa), based diet (Expandir a Pesquisa), based direct (Expandir a Pesquisa)
j centner » j center (Expandir a Pesquisa), m centner (Expandir a Pesquisa), _ entner (Expandir a Pesquisa)
cause di » cause de (Expandir a Pesquisa), cause d (Expandir a Pesquisa), cause du (Expandir a Pesquisa)
j benign » j benigno (Expandir a Pesquisa), _ benign (Expandir a Pesquisa), a benign (Expandir a Pesquisa)
nerve c » nerve cn (Expandir a Pesquisa), nerve _ (Expandir a Pesquisa), nerve a (Expandir a Pesquisa)
c disc » c disch (Expandir a Pesquisa), isc disc (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": "(( j centner nerve c disc ) OR ((( j bent nerve cause di ) OR ( j benign nerves based disc ))))~".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j centner nerve c disc ) OR ((( j bent nerve cause di ) OR ( j benign nerves based disc ))))*.