Talvez deva tentar algumas variações de ortografia:
century survey » center survey (Expandir a Pesquisa), centre survey (Expandir a Pesquisa), centered survey (Expandir a Pesquisa)
mental nerve » ventral nerve (Expandir a Pesquisa), central nerve (Expandir a Pesquisa)
nerve system » nervous system (Expandir a Pesquisa), drive system (Expandir a Pesquisa)
renal nerve » retinal nerve (Expandir a Pesquisa), cranial nerve (Expandir a Pesquisa), spinal nerve (Expandir a Pesquisa)
system dis » system dias (Expandir a Pesquisa), system dcs (Expandir a Pesquisa), system dds (Expandir a Pesquisa)
based dis » based disk (Expandir a Pesquisa), based disc (Expandir a Pesquisa), based ddis (Expandir a Pesquisa)
i mental » vi mental (Expandir a Pesquisa), ii mental (Expandir a Pesquisa), i metal (Expandir a Pesquisa)
nerve a » nerve _ (Expandir a Pesquisa)
a due » _ due (Expandir a Pesquisa), 2 due (Expandir a Pesquisa), i due (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 century survey based dis ) or ( i mental nerve a due ))) or ( a renal nerve system dis ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( a century survey based dis ) OR ( i mental nerve a due ))) OR ( a renal nerve system dis )).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( a century survey based dis ) or ( i mental nerve a due ))) or ( a renal nerve system dis ))*.