Talvez deva tentar algumas variações de ortografia:
crespo ferrer » crespo herrera (Expandir a Pesquisa), crespo ferra (Expandir a Pesquisa), crespo guerrero (Expandir a Pesquisa)
ferrer system » feeder system (Expandir a Pesquisa), ferry system (Expandir a Pesquisa), former system (Expandir a Pesquisa)
ventral nerve » femoral nerve (Expandir a Pesquisa)
nerve system » nervous system (Expandir a Pesquisa), reserve system (Expandir a Pesquisa), drive system (Expandir a Pesquisa)
system dis » system dias (Expandir a Pesquisa), system di (Expandir a Pesquisa), system das (Expandir a Pesquisa)
bent nerve » absent nerve (Expandir a Pesquisa), mental nerve (Expandir a Pesquisa), dental nerve (Expandir a Pesquisa)
a ventral » a ventura (Expandir a Pesquisa)
nerve can » merve can (Expandir a Pesquisa), nerve cat (Expandir a Pesquisa), nerve cn (Expandir a Pesquisa)
j crespo » g crespo (Expandir a Pesquisa), d crespo (Expandir a Pesquisa)
can dcs » can tdcs (Expandir a Pesquisa), can dce (Expandir a Pesquisa), can dags (Expandir a Pesquisa)
j bent » j benet (Expandir a Pesquisa), j bento (Expandir a Pesquisa), j bena (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 crespo ferrer system dis ) OR ( a ventral nerve can dcs ))) OR ( j bent nerve system dis ))~.
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j crespo ferrer system dis ) or ( a ventral nerve can dcs ))) or ( j bent nerve system dis ))*.