Talvez deva tentar algumas variações de ortografia:
letter nursing » fever nursing (Expandir a Pesquisa), letter nurse (Expandir a Pesquisa)
letter nerve » letter nurse (Expandir a Pesquisa), matter nerve (Expandir a Pesquisa), letter nervous (Expandir a Pesquisa)
nursing cost » nursing costs (Expandir a Pesquisa), nursing lost (Expandir a Pesquisa), nursing coat (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)
cost dis » cost does (Expandir a Pesquisa), chest dis (Expandir a Pesquisa), cost aids (Expandir a Pesquisa)
case dis » case disc (Expandir a Pesquisa), case di (Expandir a Pesquisa), case does (Expandir a Pesquisa)
j beta » j beth (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 nursing cost dis ))) OR ( j beta nerve case dis ))~".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j letter nerve cat diet ) OR ( a letter nursing cost dis ))) OR ( j beta nerve case dis ))*.