Talvez deva tentar algumas variações de ortografia:
absent nerve » bent nerve (Expandir a Pesquisa), abducent nerve (Expandir a Pesquisa), augment nerve (Expandir a Pesquisa)
center nerve » cancer nerve (Expandir a Pesquisa), center nurse (Expandir a Pesquisa), letter nerve (Expandir a Pesquisa)
renal nerve » retinal nerve (Expandir a Pesquisa), cranial nerve (Expandir a Pesquisa), spinal nerve (Expandir a Pesquisa)
nerve can » nerve canal (Expandir a Pesquisa), nerve a (Expandir a Pesquisa)
eo absent » how absent (Expandir a Pesquisa), _ absent (Expandir a Pesquisa), 17 absent (Expandir a Pesquisa)
a center » a century (Expandir a Pesquisa)
case dis » case disc (Expandir a Pesquisa), case di (Expandir a Pesquisa), case does (Expandir a Pesquisa)
ii renal » ii retinal (Expandir a Pesquisa)
can dcs » can tdcs (Expandir a Pesquisa), can dce (Expandir a Pesquisa), can dags (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": "(((( a center nerve case dis ) OR ( ii renal nerve can dcs ))) OR ( eo absent nerve case dis ))~".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( a center nerve case dis ) OR ( ii renal nerve can dcs ))) OR ( eo absent nerve case dis ))*.