Talvez deva tentar algumas variações de ortografia:
crespo servan » crespo hervas (Expandir a Pesquisa), crespo sara (Expandir a Pesquisa), crespo sergio (Expandir a Pesquisa)
nerve system » nervous system (Expandir a Pesquisa), drive system (Expandir a Pesquisa)
servan can » servan la (Expandir a Pesquisa), servant dans (Expandir a Pesquisa), servant jean (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 di (Expandir a Pesquisa)
j crespo » a crespo (Expandir a Pesquisa), _ crespo (Expandir a Pesquisa), c crespo (Expandir a Pesquisa)
i crespo » a crespo (Expandir a Pesquisa), _ crespo (Expandir a Pesquisa), c crespo (Expandir a Pesquisa)
servan c » servant c (Expandir a Pesquisa), servan _ (Expandir a Pesquisa), dervan c (Expandir a Pesquisa)
can dis » can disc (Expandir a Pesquisa), van dis (Expandir a Pesquisa), can die (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: (((( j crespo servan can dis ) or ( i crespo servan c dis ))) or ( j dent nerve system dis ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( j crespo servan can dis ) OR ( i crespo servan c dis ))) OR ( j dent nerve system dis )).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j crespo servan can dis ) or ( i crespo servan c dis ))) or ( j dent nerve system dis ))*.