Talvez deva tentar algumas variações de ortografia:
nacl compaired » nacl compared (Expandir a Pesquisa), acl compared (Expandir a Pesquisa)
compaired tuan » compaired turlan (Expandir a Pesquisa)
nagel clamp » nagel claus (Expandir a Pesquisa)
tuan ngoc » tuanh ngoc (Expandir a Pesquisa), tran ngoc (Expandir a Pesquisa), van ngoc (Expandir a Pesquisa)
comp dan » comp can (Expandir a Pesquisa), comp da (Expandir a Pesquisa), comp das (Expandir a Pesquisa)
j nagel » e nagel (Expandir a Pesquisa), a nagel (Expandir a Pesquisa), c nagel (Expandir a Pesquisa)
clamp a » clamp _ (Expandir a Pesquisa), clamp j (Expandir a Pesquisa)
dan non » than non (Expandir a Pesquisa), dan ning (Expandir a Pesquisa)
j nacl » a nacl (Expandir a Pesquisa), 3 nacl (Expandir a Pesquisa), 1 nacl (Expandir a Pesquisa)
j nagy » a nagy (Expandir a Pesquisa)
a now » a nowe (Expandir a Pesquisa), a new (Expandir a Pesquisa), a non (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 nacl compaired tuan ngoc ) or ((( j nagel clamp a now ) or ( j nagy comp dan non ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j nacl compaired tuan ngoc ) OR ((( j nagel clamp a now ) OR ( j nagy comp dan non )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j nacl compaired tuan ngoc ) or ((( j nagel clamp a now ) or ( j nagy comp dan non ))))*.