Talvez deva tentar algumas variações de ortografia:
crespo hervas » crespo rivas (Expandir a Pesquisa)
hervas system » evas system (Expandir a Pesquisa), herds system (Expandir a Pesquisa), nerves system (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)
bento nerve » bent nerve (Expandir a Pesquisa), benign nerve (Expandir a Pesquisa)
system des » system der (Expandir a Pesquisa), system de (Expandir a Pesquisa), system design (Expandir a Pesquisa)
nerve cat » nerve can (Expandir a Pesquisa), nerve ct (Expandir a Pesquisa), nerve cut (Expandir a Pesquisa)
j crespo » a crespo (Expandir a Pesquisa), _ crespo (Expandir a Pesquisa), m crespo (Expandir a Pesquisa)
j crest » _ crest (Expandir a Pesquisa), a crest (Expandir a Pesquisa), 5 crest (Expandir a Pesquisa)
j bento » j benito (Expandir a Pesquisa), j benton (Expandir a Pesquisa), j benson (Expandir a Pesquisa)
cat did » coast did (Expandir a Pesquisa), what did (Expandir a Pesquisa), past did (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 hervas system des ) or ( j crest nerve system des ))) or ( j bento nerve cat did ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( j crespo hervas system des ) OR ( j crest nerve system des ))) OR ( j bento nerve cat did )).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j crespo hervas system des ) or ( j crest nerve system des ))) or ( j bento nerve cat did ))*.