Talvez deva tentar algumas variações de ortografia:
served cases » observed cases (Expandir a Pesquisa), service cases (Expandir a Pesquisa), observed case (Expandir a Pesquisa)
current care » current cancer (Expandir a Pesquisa), current clamp (Expandir a Pesquisa)
renal nerve » retinal nerve (Expandir a Pesquisa), cranial nerve (Expandir a Pesquisa), spinal nerve (Expandir a Pesquisa)
best served » best serve (Expandir a Pesquisa), best observed (Expandir a Pesquisa), better served (Expandir a Pesquisa)
nerve than » nervosa than (Expandir a Pesquisa)
system dis » system dias (Expandir a Pesquisa), system dcs (Expandir a Pesquisa), system di (Expandir a Pesquisa)
cases does » causes does (Expandir a Pesquisa), case does (Expandir a Pesquisa), cases dos (Expandir a Pesquisa)
than diet » than direct (Expandir a Pesquisa), can diet (Expandir a Pesquisa), than deep (Expandir a Pesquisa)
i renal » ii renal (Expandir a Pesquisa), i real (Expandir a Pesquisa)

You can also try:

• Europeana
• Digital Public Library of America
• CORE

Pode obter mais resultados ajustando a pesquisa.

• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( i renal nerve than diet ) OR ( i current care system dis ))) OR ( j best served cases does ))~.
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( i renal nerve than diet ) or ( i current care system dis ))) or ( j best served cases does ))*.