Talvez deva tentar algumas variações de ortografia:
ventral nerve » femoral nerve (Expandir a Pesquisa)
spinal nerve » retinal nerve (Expandir a Pesquisa)
nerve system » nervous system (Expandir a Pesquisa), drive system (Expandir a Pesquisa)
crest nerve » treat nerve (Expandir a Pesquisa), crest derived (Expandir a Pesquisa), current nerve (Expandir a Pesquisa)
nerve cyst » nerve cat (Expandir a Pesquisa)
system dis » system dias (Expandir a Pesquisa), system dcs (Expandir a Pesquisa), system di (Expandir a Pesquisa)
a ventral » a ventura (Expandir a Pesquisa)
cyst dis » cyst due (Expandir a Pesquisa)
j spinal » 1 spinal (Expandir a Pesquisa), j spina (Expandir a Pesquisa), j spinar (Expandir a Pesquisa)
j crest » _ crest (Expandir a Pesquisa), a crest (Expandir a Pesquisa), j crespo (Expandir a Pesquisa)

You can also try:

• Europeana
• Digital Public Library of America
• CORE

Pode obter mais resultados ajustando a pesquisa.

• Performing a fuzzy search may retrieve terms with similar spellings: (( j crest nerve cyst dis ) or ((( j spinal nerve case due ) or ( a ventral nerve system dis ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j crest nerve cyst dis ) OR ((( j spinal nerve case due ) OR ( a ventral nerve system dis )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j crest nerve cyst dis ) or ((( j spinal nerve case due ) or ( a ventral nerve system dis ))))*.