Talvez deva tentar algumas variações de ortografia:
crespo nerve » crespo hervas (Expandir a Pesquisa), crespo servan (Expandir a Pesquisa), crespo noe (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)
dent nerve » bent nerve (Expandir a Pesquisa), dental nerve (Expandir a Pesquisa), dentin nerve (Expandir a Pesquisa)
system dis » system dias (Expandir a Pesquisa), system dcs (Expandir a Pesquisa), system dds (Expandir a Pesquisa)
case dis » case disc (Expandir a Pesquisa), case did (Expandir a Pesquisa), case di (Expandir a Pesquisa)
i crespo » a crespo (Expandir a Pesquisa), _ crespo (Expandir a Pesquisa), c crespo (Expandir a Pesquisa)
nerve c » nerve cn (Expandir a Pesquisa), nerve co (Expandir a Pesquisa), nerve ct (Expandir a Pesquisa)
j dent » j deng (Expandir a Pesquisa)
c dis » c dias (Expandir a Pesquisa), c disc (Expandir a Pesquisa), c dos (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: (((( _ crest nerve case dis ) or ( i crespo nerve c dis ))) or ( j dent nerve system dis ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( _ crest nerve case dis ) OR ( i crespo nerve c dis ))) OR ( j dent nerve system dis )).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( _ crest nerve case dis ) or ( i crespo nerve c dis ))) or ( j dent nerve system dis ))*.