Talvez deva tentar algumas variações de ortografia:
nerve system » nervous system (Expandir a Pesquisa), drive system (Expandir a Pesquisa)
detect nerve » direct nerve (Expandir a Pesquisa), detect neural (Expandir a Pesquisa), detect novel (Expandir a Pesquisa)
mental nerve » ventral nerve (Expandir a Pesquisa), renal nerve (Expandir a Pesquisa)
crest nerve » treat nerve (Expandir a Pesquisa), crest derived (Expandir a Pesquisa), current nerve (Expandir a Pesquisa)
nerve cases » nerve caused (Expandir a Pesquisa), nerve changes (Expandir a Pesquisa)
system due » system der (Expandir a Pesquisa)
cases due » case due (Expandir a Pesquisa)
case goes » care goes (Expandir a Pesquisa), age goes (Expandir a Pesquisa), jose goes (Expandir a Pesquisa)
j mental » j mengual (Expandir a Pesquisa), j mehta (Expandir a Pesquisa), j mena (Expandir a Pesquisa)
a crest » _ crest (Expandir a Pesquisa), a creusot (Expandir a Pesquisa), a crespo (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 crest nerve system due ) OR ((( _ detect nerve cases due ) OR ( j mental nerve case goes ))))~".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( a crest nerve system due ) OR ((( _ detect nerve cases due ) OR ( j mental nerve case goes ))))*.