Talvez deva tentar algumas variações de ortografia:
cancer serves » cancer series (Expandir a Pesquisa), cancer services (Expandir a Pesquisa), cancer surveys (Expandir a Pesquisa)
current curve » current survey (Expandir a Pesquisa), current care (Expandir a Pesquisa), current nerve (Expandir a Pesquisa)
benesi nerve » benign nerve (Expandir a Pesquisa), bent nerve (Expandir a Pesquisa)
serves case » series case (Expandir a Pesquisa), services case (Expandir a Pesquisa), reserves case (Expandir a Pesquisa)
curve cyst » curve cost (Expandir a Pesquisa), nerve cyst (Expandir a Pesquisa)
case does » cases does (Expandir a Pesquisa), cause does (Expandir a Pesquisa), case goes (Expandir a Pesquisa)
nerve cat » nerve can (Expandir a Pesquisa), nerve case (Expandir a Pesquisa), nerve a (Expandir a Pesquisa)
j cancer » 1 cancer (Expandir a Pesquisa), j canter (Expandir a Pesquisa), j cantero (Expandir a Pesquisa)
cyst dis » cyst due (Expandir a Pesquisa), cyst d (Expandir a Pesquisa)
cat dis » cat did (Expandir a Pesquisa), cat diets (Expandir a Pesquisa), cat diet (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 cancer serves case does ) OR ( i current curve cyst dis ))) OR ( j benesi nerve cat dis ))~".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j cancer serves case does ) OR ( i current curve cyst dis ))) OR ( j benesi nerve cat dis ))*.