Talvez deva tentar algumas variações de ortografia:
spinal nerves » spinal nerve (Expandir a Pesquisa), spinal neurones (Expandir a Pesquisa), spinal neurons (Expandir a Pesquisa)
nerves based » nerve based (Expandir a Pesquisa), nervosa based (Expandir a Pesquisa), curves based (Expandir a Pesquisa)
narvaez cyst » narvaez castro (Expandir a Pesquisa), narvaez jose (Expandir a Pesquisa), narvaez c (Expandir a Pesquisa)
pain nerve » brain nerve (Expandir a Pesquisa), main nerves (Expandir a Pesquisa), skin nerve (Expandir a Pesquisa)
based dcs » based dc (Expandir a Pesquisa), based dbs (Expandir a Pesquisa), based ddos (Expandir a Pesquisa)
j benito » de benito (Expandir a Pesquisa), j benitez (Expandir a Pesquisa)
cyst dis » cyst due (Expandir a Pesquisa), cyst d (Expandir a Pesquisa)
nerve c » nerve cn (Expandir a Pesquisa), nerve _ (Expandir a Pesquisa), nerve a (Expandir a Pesquisa)
j pain » j palin (Expandir a Pesquisa), j pais (Expandir a Pesquisa), j paik (Expandir a Pesquisa)
c dis » c dias (Expandir a Pesquisa), c disc (Expandir a Pesquisa), c dos (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 pain nerve c dis ) OR ( iii spinal nerves based dcs ))) OR ( j benito narvaez cyst dis ))~".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j pain nerve c dis ) OR ( iii spinal nerves based dcs ))) OR ( j benito narvaez cyst dis ))*.