Talvez deva tentar algumas variações de ortografia:
complex atrial » complex trial (Expandir a Pesquisa), complex arterial (Expandir a Pesquisa), complex material (Expandir a Pesquisa)
onset complex » onset complexo (Expandir a Pesquisa), yet complex (Expandir a Pesquisa)
atrial ngoc » atrial block (Expandir a Pesquisa)
kuhl carlos » gual carlos (Expandir a Pesquisa), riehl carlos (Expandir a Pesquisa), diehl carlos (Expandir a Pesquisa)
carlos noa » carlos nodal (Expandir a Pesquisa), carlos nava (Expandir a Pesquisa), carlos nara (Expandir a Pesquisa)
combs jan » coombs jana (Expandir a Pesquisa), combs john (Expandir a Pesquisa), combs j (Expandir a Pesquisa)
7.5 natl » 7.5 nacl (Expandir a Pesquisa), 3.5 nacl (Expandir a Pesquisa)
l combs » e combs (Expandir a Pesquisa), _ combs (Expandir a Pesquisa), l comps (Expandir a Pesquisa)
jan net » dan net (Expandir a Pesquisa), can net (Expandir a Pesquisa), jan nel (Expandir a Pesquisa)
5 onset » _ onset (Expandir a Pesquisa), 1 onset (Expandir a Pesquisa), 2 onset (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 l combs jan net ) or ((( 5 onset complex atrial ngoc ) or ( 7.5 natl kuhl carlos noa ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j l combs jan net ) OR ((( 5 onset complex atrial ngoc ) OR ( 7.5 natl kuhl carlos noa )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j l combs jan net ) or ((( 5 onset complex atrial ngoc ) or ( 7.5 natl kuhl carlos noa ))))*.