Talvez deva tentar algumas variações de ortografia:
letters nurse » letters nurses (Expandir a Pesquisa), letter nurse (Expandir a Pesquisa), better nurse (Expandir a Pesquisa)
bento nerve » bent nerve (Expandir a Pesquisa), benign nerve (Expandir a Pesquisa)
nurse cyst » nurse case (Expandir a Pesquisa), nurse system (Expandir a Pesquisa)
j letters » bj letters (Expandir a Pesquisa), _ letters (Expandir a Pesquisa), e letters (Expandir a Pesquisa)
i retinal » ii retinal (Expandir a Pesquisa), cis retinal (Expandir a Pesquisa), epi retinal (Expandir a Pesquisa)
nerve can » nerve canal (Expandir a Pesquisa), nerve case (Expandir a Pesquisa), nerve a (Expandir a Pesquisa)
cyst dis » cyst due (Expandir a Pesquisa), cyst d (Expandir a Pesquisa)
nerve cn » nerve c (Expandir a Pesquisa), nerve cat (Expandir a Pesquisa), nerve _ (Expandir a Pesquisa)
j bento » j benito (Expandir a Pesquisa), j benton (Expandir a Pesquisa), j benson (Expandir a Pesquisa)
can dis » can disc (Expandir a Pesquisa), van dis (Expandir a Pesquisa), can die (Expandir a Pesquisa)
cn dce » can dce (Expandir a Pesquisa), co dce (Expandir a Pesquisa), cg dce (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 letters nurse cyst dis ) OR ( i retinal nerve cn dce ))) OR ( j bento nerve can dis ))~".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j letters nurse cyst dis ) OR ( i retinal nerve cn dce ))) OR ( j bento nerve can dis ))*.