Talvez deva tentar algumas variações de ortografia:
survey systems » survey system (Expandir a Pesquisa), surgery systems (Expandir a Pesquisa), survey items (Expandir a Pesquisa)
centro nerve » central nerve (Expandir a Pesquisa), centro norte (Expandir a Pesquisa), central nerven (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)
ii centro » iii centro (Expandir a Pesquisa), iis centro (Expandir a Pesquisa), vii centro (Expandir a Pesquisa)
nerve cat » nerve can (Expandir a Pesquisa), nerve a (Expandir a Pesquisa), nerve c (Expandir a Pesquisa)
cat diet » cat diets (Expandir a Pesquisa), fat diet (Expandir a Pesquisa), eat diet (Expandir a Pesquisa)
case dis » case disc (Expandir a Pesquisa), case di (Expandir a Pesquisa), case does (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: (((( ii centro nerve cat diet ) or ( i current survey systems di ))) or ( j bent nerve case dis ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( ii centro nerve cat diet ) OR ( i current survey systems di ))) OR ( j bent nerve case dis ))*.