Talvez deva tentar algumas variações de ortografia:
river system » power system (Expandir a Pesquisa)
recurrent vs » recurrent v (Expandir a Pesquisa), recurrent vi (Expandir a Pesquisa), recurrent vaso (Expandir a Pesquisa)
j recurrent » _ recurrent (Expandir a Pesquisa), a recurrent (Expandir a Pesquisa), 1 recurrent (Expandir a Pesquisa)
delta river » volta river (Expandir a Pesquisa), delta over (Expandir a Pesquisa)
bent nerve » absent nerve (Expandir a Pesquisa), beta nerve (Expandir a Pesquisa), mental nerve (Expandir a Pesquisa)
nerve cyst » nerve case (Expandir a Pesquisa), nerve cat (Expandir a Pesquisa), nerve system (Expandir a Pesquisa)
system dis » system dias (Expandir a Pesquisa), system di (Expandir a Pesquisa), system das (Expandir a Pesquisa)
cyst dis » cyst due (Expandir a Pesquisa)
vs cyst » vs cys (Expandir a Pesquisa), gas cyst (Expandir a Pesquisa)
j delta » j della (Expandir a Pesquisa), j delton (Expandir a Pesquisa)
j bent » j benet (Expandir a Pesquisa), j bento (Expandir a Pesquisa), j bena (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 bent nerve cyst dis ) or ( j recurrent vs cyst dis ))) or ( j delta river system dis ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( j bent nerve cyst dis ) OR ( j recurrent vs cyst dis ))) OR ( j delta river system dis )).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j bent nerve cyst dis ) or ( j recurrent vs cyst dis ))) or ( j delta river system dis ))*.