Talvez deva tentar algumas variações de ortografia:
ventral nerve » femoral nerve (Expandir a Pesquisa)
benigno base » benign base (Expandir a Pesquisa), benign case (Expandir a Pesquisa), benign based (Expandir a Pesquisa)
both nerve » both naive (Expandir a Pesquisa), fourth nerve (Expandir a Pesquisa)
nerve cyst » nerve cystic (Expandir a Pesquisa), nerve cat (Expandir a Pesquisa), nerve cut (Expandir a Pesquisa)
i ventral » _ ventral (Expandir a Pesquisa), a ventral (Expandir a Pesquisa), 2 ventral (Expandir a Pesquisa)
j benigno » a benigno (Expandir a Pesquisa), c benigno (Expandir a Pesquisa), _ benigno (Expandir a Pesquisa)
base cyst » based cyst (Expandir a Pesquisa), cause cyst (Expandir a Pesquisa), bone cyst (Expandir a Pesquisa)
case dcs » case disc (Expandir a Pesquisa), case does (Expandir a Pesquisa), case dose (Expandir a Pesquisa)
cyst d » cyst _ (Expandir a Pesquisa), cyst a (Expandir a Pesquisa), cyst e (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 both nerve cyst d ) OR ( i ventral nerve case dcs ))) OR ( j benigno base cyst d ))~".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( i both nerve cyst d ) OR ( i ventral nerve case dcs ))) OR ( j benigno base cyst d ))*.