Talvez deva tentar algumas variações de ortografia:
recurrent severe » recurrent fever (Expandir a Pesquisa), recurrent seizures (Expandir a Pesquisa), recurrent stroke (Expandir a Pesquisa)
current nerve » recurrent nerve (Expandir a Pesquisa), current curve (Expandir a Pesquisa), recurrent nerves (Expandir a Pesquisa)
nerve system » nervous system (Expandir a Pesquisa), drive system (Expandir a Pesquisa)
severe cost » severe post (Expandir a Pesquisa), severe cast (Expandir a Pesquisa), severe chest (Expandir a Pesquisa)
mehta nerve » mehta nave (Expandir a Pesquisa), mehta nee (Expandir a Pesquisa), mehta neeraj (Expandir a Pesquisa)
system due » system de (Expandir a Pesquisa), system der (Expandir a Pesquisa)
j current » j currently (Expandir a Pesquisa), ad current (Expandir a Pesquisa), j curran (Expandir a Pesquisa)
cost dis » cost does (Expandir a Pesquisa), chest dis (Expandir a Pesquisa), cost aids (Expandir a Pesquisa)
nerve a » nerve _ (Expandir a Pesquisa)
a dos » e dos (Expandir a Pesquisa), a dog (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: (((( j current nerve a dos ) OR ( _ recurrent severe cost dis ))) OR ( a mehta nerve system due ))~.
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j current nerve a dos ) or ( _ recurrent severe cost dis ))) or ( a mehta nerve system due ))*.