Talvez deva tentar algumas variações de ortografia:
neonatal research » dental research (Expandir a Pesquisa)
research system » research systems (Expandir a Pesquisa)
center nerve » cancer nerve (Expandir a Pesquisa), center nurse (Expandir a Pesquisa), letter nerve (Expandir a Pesquisa)
j neonatal » _ neonatal (Expandir a Pesquisa), a neonatal (Expandir a Pesquisa), 3 neonatal (Expandir a Pesquisa)
system dcs » system dcus (Expandir a Pesquisa), system sdcs (Expandir a Pesquisa), system des (Expandir a Pesquisa)
nerve cat » nerve can (Expandir a Pesquisa), nerve case (Expandir a Pesquisa), nerve a (Expandir a Pesquisa)
j center » j centner (Expandir a Pesquisa), j centeno (Expandir a Pesquisa), j cestero (Expandir a Pesquisa)
cat dis » cat did (Expandir a Pesquisa), cat diets (Expandir a Pesquisa), cat diet (Expandir a Pesquisa)
serve a » serve _ (Expandir a Pesquisa), nerve a (Expandir a Pesquisa), herve a (Expandir a Pesquisa)
a disc » a dish (Expandir a Pesquisa), a disk (Expandir a Pesquisa)
i can » _ can (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: (((( j center nerve cat dis ) or ( i can serve a disc ))) or ( j neonatal research system dcs ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( j center nerve cat dis ) OR ( i can serve a disc ))) OR ( j neonatal research system dcs )).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j center nerve cat dis ) or ( i can serve a disc ))) or ( j neonatal research system dcs ))*.