Talvez deva tentar algumas variações de ortografia:
current curves » current curve (Expandir a Pesquisa), current surveys (Expandir a Pesquisa), current survey (Expandir a Pesquisa)
current nerve » recurrent nerve (Expandir a Pesquisa), current curve (Expandir a Pesquisa), recurrent nerves (Expandir a Pesquisa)
benitez nara » benitez nuria (Expandir a Pesquisa), benitez andrea (Expandir a Pesquisa), benitez anaid (Expandir a Pesquisa)
curves can » curves a (Expandir a Pesquisa), curved canal (Expandir a Pesquisa)
nerve cyst » nerve case (Expandir a Pesquisa), nerve cat (Expandir a Pesquisa), nerve system (Expandir a Pesquisa)
nara causa » rara causa (Expandir a Pesquisa), para causas (Expandir a Pesquisa), para causar (Expandir a Pesquisa)
j current » j currently (Expandir a Pesquisa), j curran (Expandir a Pesquisa), j currell (Expandir a Pesquisa)
causa das » causas das (Expandir a Pesquisa), causa da (Expandir a Pesquisa), causa de (Expandir a Pesquisa)
cyst dis » cyst due (Expandir a Pesquisa), cyst d (Expandir a Pesquisa)
can dcs » can tdcs (Expandir a Pesquisa), can dce (Expandir a Pesquisa), can dags (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 current curves can dcs ) OR ( i current nerve cyst dis ))) OR ( a benitez nara causa das ))~".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j current curves can dcs ) OR ( i current nerve cyst dis ))) OR ( a benitez nara causa das ))*.