Talvez deva tentar algumas variações de ortografia:
central nerve » central nervous (Expandir a Pesquisa), central neural (Expandir a Pesquisa), femoral nerve (Expandir a Pesquisa)
ventral nerve » femoral 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)
j central » 1hfj central (Expandir a Pesquisa)
j ventral » c7 ventral (Expandir a Pesquisa), ii ventral (Expandir a Pesquisa), j ventura (Expandir a Pesquisa)
case dis » case disc (Expandir a Pesquisa), case di (Expandir a Pesquisa), case does (Expandir a Pesquisa)
i crest » i crestr (Expandir a Pesquisa), 5 crest (Expandir a Pesquisa), i crespo (Expandir a Pesquisa)
nerve a » nerve _ (Expandir a Pesquisa)
a dye » _ dye (Expandir a Pesquisa)

You can also try:

• Europeana
• Digital Public Library of America
• CORE

Pode obter mais resultados ajustando a pesquisa.

• "As palabras AND, OR e NOT podem gerar pesquisas incorrectas; tente utilizar aspas": "(((( j central nerve system der ) OR ( i crest nerve case dis ))) OR ( j ventral nerve a dye ))~".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j central nerve system der ) OR ( i crest nerve case dis ))) OR ( j ventral nerve a dye ))*.