Talvez deva tentar algumas variações de ortografia:
nac impaired » sac impaired (Expandir a Pesquisa), a impaired (Expandir a Pesquisa), c impaired (Expandir a Pesquisa)
impaired von » impaired v (Expandir a Pesquisa), impaired vision (Expandir a Pesquisa), impaired virion (Expandir a Pesquisa)
campos carl » campos carlos (Expandir a Pesquisa)
neil clamp » cell clamp (Expandir a Pesquisa), coil clamp (Expandir a Pesquisa), neil clark (Expandir a Pesquisa)
von ngoc » van ngoc (Expandir a Pesquisa), vo ngoc (Expandir a Pesquisa), son ngoc (Expandir a Pesquisa)
y campos » a campos (Expandir a Pesquisa), y campo (Expandir a Pesquisa)
carl non » carl anton (Expandir a Pesquisa), carl noah (Expandir a Pesquisa), carl n (Expandir a Pesquisa)
clamp a » clamp _ (Expandir a Pesquisa), clamp j (Expandir a Pesquisa)
j neil » d neil (Expandir a Pesquisa), c neil (Expandir a Pesquisa), _ neil (Expandir a Pesquisa)
a nac » a nao (Expandir a Pesquisa), _ nac (Expandir a Pesquisa)
a now » a new (Expandir a Pesquisa), a non (Expandir a Pesquisa), _ now (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 nac impaired von ngoc ) or ((( j neil clamp a now ) or ( j y campos carl non ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( a nac impaired von ngoc ) OR ((( j neil clamp a now ) OR ( j y campos carl non )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( a nac impaired von ngoc ) or ((( j neil clamp a now ) or ( j y campos carl non ))))*.