Talvez deva tentar algumas variações de ortografia:
nacl impaired » al impaired (Expandir a Pesquisa), renal impaired (Expandir a Pesquisa), focal impaired (Expandir a Pesquisa)
impaired toll » impaired th1 (Expandir a Pesquisa)
nayl clamp » tail clamp (Expandir a Pesquisa)
campo phan » campo pac (Expandir a Pesquisa), campo meghan (Expandir a Pesquisa), campo parana (Expandir a Pesquisa)
toll john » tolle john (Expandir a Pesquisa), roll john (Expandir a Pesquisa), doull john (Expandir a Pesquisa)
phan ngoc » pham ngoc (Expandir a Pesquisa), tran ngoc (Expandir a Pesquisa), ha ngoc (Expandir a Pesquisa)
clamp a » clamp _ (Expandir a Pesquisa), clamp j (Expandir a Pesquisa)
y campo » e campo (Expandir a Pesquisa), a campo (Expandir a Pesquisa), do campo (Expandir a Pesquisa)
a nayl » a nacl (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: (( _ nacl impaired toll john ) or ((( a nayl clamp a now ) or ( j y campo phan ngoc ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( _ nacl impaired toll john ) OR ((( a nayl clamp a now ) OR ( j y campo phan ngoc )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( _ nacl impaired toll john ) or ((( a nayl clamp a now ) or ( j y campo phan ngoc ))))*.