Talvez deva tentar algumas variações de ortografia:
center nerve » cancer nerve (Expandir a Pesquisa), center nurse (Expandir a Pesquisa), letter nerve (Expandir a Pesquisa)
nerve system » nervous system (Expandir a Pesquisa), reserve 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)
system due » system de (Expandir a Pesquisa), system der (Expandir a Pesquisa)
system dis » system dias (Expandir a Pesquisa), system di (Expandir a Pesquisa), system das (Expandir a Pesquisa)
neal mark » weal mark (Expandir a Pesquisa), neal marie (Expandir a Pesquisa), neal jack (Expandir a Pesquisa)
a center » a century (Expandir a Pesquisa)
mark can » mark chan (Expandir a Pesquisa), mark scan (Expandir a Pesquisa), marks can (Expandir a Pesquisa)
can diet » can direct (Expandir a Pesquisa), than diet (Expandir a Pesquisa)
a crest » _ crest (Expandir a Pesquisa), a creusot (Expandir a Pesquisa), a crespo (Expandir a Pesquisa)
j neal » a neal (Expandir a Pesquisa), j neil (Expandir a Pesquisa), j neel (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: (((( a center nerve system due ) or ( a crest nerve system dis ))) or ( j neal mark can diet ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( a center nerve system due ) OR ( a crest nerve system dis ))) OR ( j neal mark can diet )).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( a center nerve system due ) or ( a crest nerve system dis ))) or ( j neal mark can diet ))*.