Talvez deva tentar algumas variações de ortografia:
recurrent nerve » recurrent neural (Expandir a Pesquisa)
nerve system » nervous system (Expandir a Pesquisa), drive system (Expandir a Pesquisa)
i recurrent » ii recurrent (Expandir a Pesquisa), a recurrent (Expandir a Pesquisa), 1 recurrent (Expandir a Pesquisa)
cent serve » best serve (Expandir a Pesquisa), pet serve (Expandir a Pesquisa), client server (Expandir a Pesquisa)
best steve » best steven (Expandir a Pesquisa), west steven (Expandir a Pesquisa), guest steven (Expandir a Pesquisa)
steve case » steve cose (Expandir a Pesquisa), steve c.s (Expandir a Pesquisa), steven caskey (Expandir a Pesquisa)
serve can » nerve can (Expandir a Pesquisa), merve can (Expandir a Pesquisa), service can (Expandir a Pesquisa)
system do » system does (Expandir a Pesquisa), system der (Expandir a Pesquisa)
can diet » can direct (Expandir a Pesquisa)
case dis » case disc (Expandir a Pesquisa), case di (Expandir a Pesquisa), case does (Expandir a Pesquisa)
i cent » i cento (Expandir a Pesquisa), ai cent (Expandir a Pesquisa), ii cent (Expandir a Pesquisa)

You can also try:

• Europeana
• Digital Public Library of America
• CORE

Pode obter mais resultados ajustando a pesquisa.

• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( i cent serve can diet ) OR ( i recurrent nerve system do ))) OR ( j best steve case dis ))~.
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( i cent serve can diet ) or ( i recurrent nerve system do ))) or ( j best steve case dis ))*.