Talvez debería tentar con algunhas variantes ortográficas:
central nerve » central nervous (Expandir procura), central neural (Expandir procura), pectoral nerve (Expandir procura)
ventral nerve » femoral nerve (Expandir procura)
nerve system » nervous system (Expandir procura), drive system (Expandir procura)
crest nerve » treat nerve (Expandir procura), crest derived (Expandir procura), current nerve (Expandir procura)
nerve cnase » nerve case (Expandir procura), nerve cases (Expandir procura), nerve cause (Expandir procura)
cnase disc » case disc (Expandir procura), cause disc (Expandir procura), kinase discs (Expandir procura)
j central » 1hfj central (Expandir procura)
2 ventral » _ ventral (Expandir procura), a ventral (Expandir procura)
system d » system de (Expandir procura), system der (Expandir procura), system des (Expandir procura)
nerve cn » nerve can (Expandir procura), nerve c (Expandir procura), nerve co (Expandir procura)
i crest » i crestr (Expandir procura), _ crest (Expandir procura), a crest (Expandir procura)
cn due » con due (Expandir procura), chin due (Expandir procura), fcrn due (Expandir procura)

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 central nerve system d ) or ( i crest nerve cnase disc ))) or ( 2 ventral nerve cn due ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( j central nerve system d ) OR ( i crest nerve cnase disc ))) OR ( 2 ventral nerve cn due )).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j central nerve system d ) or ( i crest nerve cnase disc ))) or ( 2 ventral nerve cn due ))*.