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 than » impaired th1 (Expandir a Pesquisa), impaired hand (Expandir a Pesquisa), impaired th17 (Expandir a Pesquisa)
than ngoc » thanh ngoc (Expandir a Pesquisa), thuan ngoc (Expandir a Pesquisa), tran ngoc (Expandir a Pesquisa)
col clamp » coli clamp (Expandir a Pesquisa), coil clamp (Expandir a Pesquisa), cell clamp (Expandir a Pesquisa)
tras ngoc » tran ngoc (Expandir a Pesquisa), tram ngoc (Expandir a Pesquisa), trang ngoc (Expandir a Pesquisa)
clamp a » clamp _ (Expandir a Pesquisa), clamp j (Expandir a Pesquisa)
b nacl » b nacela (Expandir a Pesquisa)
j col » j cole (Expandir a Pesquisa), j coal (Expandir a Pesquisa), j cola (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: (( b nacl impaired than ngoc ) OR ((( j col clamp a now ) OR ( j nancy (chip OR chi) tras ngoc ))))~.
• "As palabras AND, OR e NOT podem gerar pesquisas incorrectas; tente utilizar aspas": "(( b nacl impaired than ngoc ) OR ((( j col clamp a now ) OR ( j nancy (chip OR chi) tras ngoc ))))".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( b nacl impaired than ngoc ) OR ((( j col clamp a now ) OR ( j nancy (chip OR chi) tras ngoc ))))*.