Talvez deva tentar algumas variações de ortografia:
central nerve » ventral nerve (Expandir a Pesquisa), central nervous (Expandir a Pesquisa), central neural (Expandir a Pesquisa)
crest nerve » treat nerve (Expandir a Pesquisa), crest derived (Expandir a Pesquisa), current nerve (Expandir a Pesquisa)
neal merve » neal merv (Expandir a Pesquisa), meral merve (Expandir a Pesquisa), senal merve (Expandir a Pesquisa)
nerve can » nerve canal (Expandir a Pesquisa), nerve case (Expandir a Pesquisa), nerve a (Expandir a Pesquisa)
can diet » can direct (Expandir a Pesquisa)
can died » can die (Expandir a Pesquisa), man died (Expandir a Pesquisa), can didem (Expandir a Pesquisa)
can due » scan due (Expandir a Pesquisa), man due (Expandir a Pesquisa), can de (Expandir a Pesquisa)
a crest » _ crest (Expandir a Pesquisa), a creusot (Expandir a Pesquisa), a crested (Expandir a Pesquisa)
j neal » j neil (Expandir a Pesquisa), a neal (Expandir a Pesquisa)

You can also try:

• Europeana
• Digital Public Library of America
• CORE

Pode obter mais resultados ajustando a pesquisa.

• "As palabras AND, OR e NOT podem gerar pesquisas incorrectas; tente utilizar aspas": "(((( a central nerve can due ) OR ( a crest nerve can diet ))) OR ( j neal merve can died ))~".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( a central nerve can due ) OR ( a crest nerve can diet ))) OR ( j neal merve can died ))*.