Talvez deva tentar algumas variações de ortografia:
letter nerve » matter nerve (Expandir a Pesquisa), letter nervous (Expandir a Pesquisa), lobster nerve (Expandir a Pesquisa)
letter nurse » letter nursing (Expandir a Pesquisa)
dental nerve » mental nerve (Expandir a Pesquisa), ventral nerve (Expandir a Pesquisa), central nerve (Expandir a Pesquisa)
nurse cyst » nurse case (Expandir a Pesquisa), nurse system (Expandir a Pesquisa)
nerve cat » nerve can (Expandir a Pesquisa), nerve a (Expandir a Pesquisa), nerve c (Expandir a Pesquisa)
j letter » bj letter (Expandir a Pesquisa), cj letter (Expandir a Pesquisa), j letters (Expandir a Pesquisa)
cat diet » cat diets (Expandir a Pesquisa), fat diet (Expandir a Pesquisa), eat diet (Expandir a Pesquisa)
a letter » _ letter (Expandir a Pesquisa)
cyst dis » cyst due (Expandir a Pesquisa)
j dental » j delta (Expandir a Pesquisa), j deal (Expandir a Pesquisa), j denham (Expandir a Pesquisa)
case dis » case disc (Expandir a Pesquisa), case di (Expandir a Pesquisa), case does (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": "(((( j letter nerve cat diet ) OR ( a letter nurse cyst dis ))) OR ( j dental nerve case dis ))~".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j letter nerve cat diet ) OR ( a letter nurse cyst dis ))) OR ( j dental nerve case dis ))*.