Talvez deva tentar algumas variações de ortografia:
ventral nerve » femoral nerve (Expandir a Pesquisa)
cancer need » cancer new (Expandir a Pesquisa), cancer novel (Expandir a Pesquisa)
benign cnvs » benign cns (Expandir a Pesquisa), benign cfcs (Expandir a Pesquisa), benign cause (Expandir a Pesquisa)
need based » needs based (Expandir a Pesquisa), seed based (Expandir a Pesquisa), needle based (Expandir a Pesquisa)
i ventral » _ ventral (Expandir a Pesquisa), a ventral (Expandir a Pesquisa), 2 ventral (Expandir a Pesquisa)
nerve can » nerve canal (Expandir a Pesquisa), nerve case (Expandir a Pesquisa), nerve a (Expandir a Pesquisa)
cnvs case » acnes case (Expandir a Pesquisa), cnvs based (Expandir a Pesquisa), vs case (Expandir a Pesquisa)
j cancer » j canter (Expandir a Pesquisa), j cantero (Expandir a Pesquisa), j candel (Expandir a Pesquisa)
based di » based dir (Expandir a Pesquisa), based diet (Expandir a Pesquisa), based disk (Expandir a Pesquisa)
a benign » _ benign (Expandir a Pesquisa)
can dcs » can tdcs (Expandir a Pesquisa), can dce (Expandir a Pesquisa), can bddcs (Expandir a Pesquisa)
case di » case did (Expandir a Pesquisa), case dti (Expandir a Pesquisa), case de (Expandir a Pesquisa)

You can also try:

• Europeana
• Digital Public Library of America
• CORE

Pode obter mais resultados ajustando a pesquisa.

• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( j cancer need based di ) OR ( i ventral nerve can dcs ))) OR ( a benign cnvs case di ))~.
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j cancer need based di ) or ( i ventral nerve can dcs ))) or ( a benign cnvs case di ))*.