Talvez deva tentar algumas variações de ortografia:
femoral nerve » femoral neck (Expandir a Pesquisa)
central nerve » ventral nerve (Expandir a Pesquisa), central nervous (Expandir a Pesquisa), central neural (Expandir a Pesquisa)
benign neck » benign nevi (Expandir a Pesquisa)
i central » coli central (Expandir a Pesquisa)
nerve cat » nerve case (Expandir a Pesquisa), nerve a (Expandir a Pesquisa), nerve c (Expandir a Pesquisa)
i femoral » ii femoral (Expandir a Pesquisa), fit femoral (Expandir a Pesquisa), iii femoral (Expandir a Pesquisa)
nerve can » nerve canal (Expandir a Pesquisa), nerve case (Expandir a Pesquisa), nerve a (Expandir a Pesquisa)
neck cat » neck ct (Expandir a Pesquisa), neck can (Expandir a Pesquisa), neck cut (Expandir a Pesquisa)
cat dis » cat did (Expandir a Pesquisa), cat diets (Expandir a Pesquisa), cat diet (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": "(((( i central nerve cat dis ) OR ( i femoral nerve can dcs ))) OR ( _ benign neck cat dis ))~".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( i central nerve cat dis ) OR ( i femoral nerve can dcs ))) OR ( _ benign neck cat dis ))*.