Talvez deva tentar algumas variações de ortografia:
reserve system » research system (Expandir a Pesquisa), research systems (Expandir a Pesquisa)
ventral nerve » femoral nerve (Expandir a Pesquisa)
renal reserve » adrenal reserve (Expandir a Pesquisa), legal reserve (Expandir a Pesquisa), adrenal reserves (Expandir a Pesquisa)
center nerve » cancer nerve (Expandir a Pesquisa), center nurse (Expandir a Pesquisa), letter nerve (Expandir a Pesquisa)
nerve cyst » nerve cat (Expandir a Pesquisa), nerve system (Expandir a Pesquisa)
system das » system dias (Expandir a Pesquisa), systems das (Expandir a Pesquisa), system des (Expandir a Pesquisa)
i ventral » ii ventral (Expandir a Pesquisa), _ ventral (Expandir a Pesquisa), a ventral (Expandir a Pesquisa)
a center » a century (Expandir a Pesquisa)
case dis » case disc (Expandir a Pesquisa), case di (Expandir a Pesquisa), case does (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: (((( a center nerve case dis ) or ( i ventral nerve cyst due ))) or ( a renal reserve system das ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( a center nerve case dis ) OR ( i ventral nerve cyst due ))) OR ( a renal reserve system das )).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( a center nerve case dis ) or ( i ventral nerve cyst due ))) or ( a renal reserve system das ))*.