Talvez deva tentar algumas variações de ortografia:
reserve system » research system (Expandir a Pesquisa), nerve system (Expandir a Pesquisa), research systems (Expandir a Pesquisa)
center nurse » center nurses (Expandir a Pesquisa), better nurse (Expandir a Pesquisa), letter nurse (Expandir a Pesquisa)
nurse _ase » nurse case (Expandir a Pesquisa), nurse based (Expandir a Pesquisa), nurse care (Expandir a Pesquisa)
cent nerve » bent nerve (Expandir a Pesquisa), recent nerve (Expandir a Pesquisa), crest nerve (Expandir a Pesquisa)
_ase does » base does (Expandir a Pesquisa), case does (Expandir a Pesquisa), phase does (Expandir a Pesquisa)
system di » system de (Expandir a Pesquisa), system d (Expandir a Pesquisa), system dias (Expandir a Pesquisa)
j center » j centner (Expandir a Pesquisa), 2 center (Expandir a Pesquisa), 19 center (Expandir a Pesquisa)
i cent » i cento (Expandir a Pesquisa), ai cent (Expandir a Pesquisa), ii cent (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 center nurse _ase does ) or ( i cent nerve _ dis ))) or ( a mehta reserve system di ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( j center nurse _ase does ) OR ( i cent nerve _ dis ))) OR ( a mehta reserve system di )).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j center nurse _ase does ) or ( i cent nerve _ dis ))) or ( a mehta reserve system di ))*.