Talvez deva tentar algumas variações de ortografia:
letter nerve » letter nurse (Expandir a Pesquisa), matter nerve (Expandir a Pesquisa), letter nervous (Expandir a Pesquisa)
nerve cause » nerve caused (Expandir a Pesquisa), nerve case (Expandir a Pesquisa), nerve course (Expandir a Pesquisa)
benign neck » benign nevi (Expandir a Pesquisa)
bent nerve » absent nerve (Expandir a Pesquisa), mental nerve (Expandir a Pesquisa), dental nerve (Expandir a Pesquisa)
neck cause » neck caused (Expandir a Pesquisa), neck case (Expandir a Pesquisa), neck cases (Expandir a Pesquisa)
nerve en » nerve end (Expandir a Pesquisa), nerve aen (Expandir a Pesquisa), nerve ex (Expandir a Pesquisa)
a benign » _ benign (Expandir a Pesquisa)
cause d » cause de (Expandir a Pesquisa), cause du (Expandir a Pesquisa), cause _ (Expandir a Pesquisa)
en dis » en dios (Expandir a Pesquisa), en dias (Expandir a Pesquisa), en die (Expandir a Pesquisa)
j bent » j benet (Expandir a Pesquisa), j bento (Expandir a Pesquisa), j bena (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": "(( _ letter nerve en dis ) OR ((( j bent nerve cause d ) OR ( a benign neck cause d ))))~".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( _ letter nerve en dis ) OR ((( j bent nerve cause d ) OR ( a benign neck cause d ))))*.