Talvez deva tentar algumas variações de ortografia:
survey systems » survey system (Expandir a Pesquisa), surgery systems (Expandir a Pesquisa), survey items (Expandir a Pesquisa)
current nerve » recurrent nerve (Expandir a Pesquisa), current curve (Expandir a Pesquisa), recurrent nerves (Expandir a Pesquisa)
nerve care » nerve case (Expandir a Pesquisa), nerve cases (Expandir a Pesquisa), nerve cable (Expandir a Pesquisa)
systems di » systems do (Expandir a Pesquisa), systems de (Expandir a Pesquisa), systems d (Expandir a Pesquisa)
bent nerve » absent nerve (Expandir a Pesquisa), mental nerve (Expandir a Pesquisa), dental nerve (Expandir a Pesquisa)
j current » j currently (Expandir a Pesquisa), j curran (Expandir a Pesquisa), j currell (Expandir a Pesquisa)
care goes » care does (Expandir a Pesquisa), case goes (Expandir a Pesquisa), care goals (Expandir a Pesquisa)
nerve can » nerve canal (Expandir a Pesquisa), nerve case (Expandir a Pesquisa), nerve a (Expandir a Pesquisa)
can diet » can direct (Expandir a Pesquisa), than diet (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 current nerve care goes ) or ( 1 current survey systems di ))) or ( j bent nerve can diet ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( j current nerve care goes ) OR ( 1 current survey systems di ))) OR ( j bent nerve can diet )).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j current nerve care goes ) or ( 1 current survey systems di ))) or ( j bent nerve can diet ))*.