Talvez deva tentar algumas variações de ortografia:
ventral nerve » femoral nerve (Expandir a Pesquisa)
benign nerve » benign nevi (Expandir a Pesquisa), benign neck (Expandir a Pesquisa), benign beale (Expandir a Pesquisa)
center gene » inter gene (Expandir a Pesquisa), cluster gene (Expandir a Pesquisa), central gene (Expandir a Pesquisa)
gene system » line system (Expandir a Pesquisa), genetic system (Expandir a Pesquisa), general system (Expandir a Pesquisa)
system dis » system dias (Expandir a Pesquisa), system dcs (Expandir a Pesquisa), system dds (Expandir a Pesquisa)
nerve cyst » nerve cystic (Expandir a Pesquisa), nerve case (Expandir a Pesquisa), nerve cat (Expandir a Pesquisa)
i ventral » a ventral (Expandir a Pesquisa), 2 ventral (Expandir a Pesquisa), i ventura (Expandir a Pesquisa)
nerve can » nerve canal (Expandir a Pesquisa), nerve case (Expandir a Pesquisa), nerve a (Expandir a Pesquisa)
de benign » de benigna (Expandir a Pesquisa), de benigno (Expandir a Pesquisa), de benin (Expandir a Pesquisa)
j center » j centner (Expandir a Pesquisa), j centeno (Expandir a Pesquisa), j cestero (Expandir a Pesquisa)
cyst dis » cyst due (Expandir a Pesquisa), cyst d (Expandir a Pesquisa), cyst dna (Expandir a Pesquisa)
can dce » can de (Expandir a Pesquisa), can dcs (Expandir a Pesquisa), can dance (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 center gene system dis ) OR ( i ventral nerve can dce ))) OR ( de benign nerve cyst dis ))~.
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j center gene system dis ) or ( i ventral nerve can dce ))) or ( de benign nerve cyst dis ))*.