Talvez deva tentar algumas variações de ortografia:
nacl impaired » al impaired (Expandir a Pesquisa), renal impaired (Expandir a Pesquisa), early impaired (Expandir a Pesquisa)
tail clamp » tail clip (Expandir a Pesquisa), coil clamp (Expandir a Pesquisa)
campo lam » campo la (Expandir a Pesquisa), campo las (Expandir a Pesquisa), campo lara (Expandir a Pesquisa)
clamp j » clamp _ (Expandir a Pesquisa)
a campo » a campos (Expandir a Pesquisa), a camp (Expandir a Pesquisa)
a nacl » _ nacl (Expandir a Pesquisa), m nacl (Expandir a Pesquisa), 3 nacl (Expandir a Pesquisa)
β ngo » _ ngo (Expandir a Pesquisa), m ngo (Expandir a Pesquisa), a ngo (Expandir a Pesquisa)
β ngf » _ ngf (Expandir a Pesquisa), β tgf (Expandir a Pesquisa)
m tail » m tait (Expandir a Pesquisa), m taib (Expandir a Pesquisa), m tabl (Expandir a Pesquisa)
lam ng » lam ngan (Expandir a Pesquisa), lam bing (Expandir a Pesquisa), lam ngoc (Expandir a Pesquisa)
j now » _ now (Expandir a Pesquisa), a now (Expandir a Pesquisa), i 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 nacl impaired ((β ngo) OR (β ngf)) ) or ((( m tail clamp j now ) or ( j a campo lam ng ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( a nacl impaired ((β ngo) OR (β ngf)) ) OR ((( m tail clamp j now ) OR ( j a campo lam ng )))).
• "As palabras AND, OR e NOT podem gerar pesquisas incorrectas; tente utilizar aspas": "(( a nacl impaired ((β ngo) OR (β ngf)) ) or ((( m tail clamp j now ) or ( j a campo lam ng ))))".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( a nacl impaired ((β ngo) OR (β ngf)) ) or ((( m tail clamp j now ) or ( j a campo lam ng ))))*.