Talvez deva tentar algumas variações de ortografia:
cancer course » cancer nurse (Expandir a Pesquisa), cancer could (Expandir a Pesquisa)
current nerve » recurrent nerve (Expandir a Pesquisa), current curve (Expandir a Pesquisa), current service (Expandir a Pesquisa)
course cyst » course costs (Expandir a Pesquisa), course case (Expandir a Pesquisa), course cs1 (Expandir a Pesquisa)
benet nerve » bent nerve (Expandir a Pesquisa), detect nerve (Expandir a Pesquisa), benign nerve (Expandir a Pesquisa)
4d current » 3d current (Expandir a Pesquisa), ad current (Expandir a Pesquisa), d current (Expandir a Pesquisa)
nerve cyst » nerve cystic (Expandir a Pesquisa), nerve case (Expandir a Pesquisa), nerve cat (Expandir a Pesquisa)
0 cancer » 60 cancer (Expandir a Pesquisa), 10 cancer (Expandir a Pesquisa), 50 cancer (Expandir a Pesquisa)
cyst dis » cyst due (Expandir a Pesquisa), cyst d (Expandir a Pesquisa)
j benet » j bennett (Expandir a Pesquisa), j benito (Expandir a Pesquisa), j benesi (Expandir a Pesquisa)

You can also try:

• Europeana
• Digital Public Library of America
• CORE

Pode obter mais resultados ajustando a pesquisa.

• Performing a fuzzy search may retrieve terms with similar spellings: (((( 0 cancer course cyst dis ) OR ( 4d current nerve cyst dis ))) OR ( j benet nerve cyst dis ))~.
• "As palabras AND, OR e NOT podem gerar pesquisas incorrectas; tente utilizar aspas": "(((( 0 cancer course cyst dis ) OR ( 4d current nerve cyst dis ))) OR ( j benet nerve cyst dis ))".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( 0 cancer course cyst dis ) OR ( 4d current nerve cyst dis ))) OR ( j benet nerve cyst dis ))*.