Talvez deva tentar algumas variações de ortografia:
recurrent caries » recurrent cases (Expandir a Pesquisa), recurrent cardiac (Expandir a Pesquisa), recurrent cancers (Expandir a Pesquisa)
current curve » current survey (Expandir a Pesquisa), current care (Expandir a Pesquisa), current nerve (Expandir a Pesquisa)
nerve system » nervous system (Expandir a Pesquisa), drive system (Expandir a Pesquisa)
a recurrent » _ recurrent (Expandir a Pesquisa)
curve cyst » curve cost (Expandir a Pesquisa), nerve cyst (Expandir a Pesquisa)
caries cat » caries can (Expandir a Pesquisa), caries data (Expandir a Pesquisa), caries a (Expandir a Pesquisa)
system due » system der (Expandir a Pesquisa)
cat dis » cat did (Expandir a Pesquisa), cat diets (Expandir a Pesquisa), cat diet (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.

• Performing a fuzzy search may retrieve terms with similar spellings: (((( 2 current curve cyst due ) or ( a recurrent caries cat dis ))) or ( j beta nerve system due ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( 2 current curve cyst due ) OR ( a recurrent caries cat dis ))) OR ( j beta nerve system due )).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( 2 current curve cyst due ) or ( a recurrent caries cat dis ))) or ( j beta nerve system due ))*.