Talvez deva tentar algumas variações de ortografia:
ventral nerve » femoral nerve (Expandir a Pesquisa)
nerve system » nervous system (Expandir a Pesquisa), drive system (Expandir a Pesquisa)
spinal nerve » retinal nerve (Expandir a Pesquisa)
system das » system dias (Expandir a Pesquisa), systems das (Expandir a Pesquisa), system des (Expandir a Pesquisa)
best serve » best served (Expandir a Pesquisa), best steve (Expandir a Pesquisa), best observed (Expandir a Pesquisa)
serve case » nerve case (Expandir a Pesquisa), service case (Expandir a Pesquisa), nerve cases (Expandir a Pesquisa)
i ventral » ii 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)
j spinal » j spina (Expandir a Pesquisa), j spinar (Expandir a Pesquisa), 0 spinal (Expandir a Pesquisa)
can dis » can disc (Expandir a Pesquisa), van dis (Expandir a Pesquisa), can die (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: (( i ventral nerve system das ) or ((( j best serve case due ) or ( j spinal nerve can dis ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( i ventral nerve system das ) OR ((( j best serve case due ) OR ( j spinal nerve can dis )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( i ventral nerve system das ) or ((( j best serve case due ) or ( j spinal nerve can dis ))))*.