Talvez deva tentar algumas variações de ortografia:
complex concept » complex concepts (Expandir a Pesquisa), complex context (Expandir a Pesquisa), complex connects (Expandir a Pesquisa)
carlos navarro » carmen navarro (Expandir a Pesquisa)
icu complex » iscu complex (Expandir a Pesquisa), cu complex (Expandir a Pesquisa), mcu complex (Expandir a Pesquisa)
hobbs john » hobbs jean (Expandir a Pesquisa)
john agnew » john bagnell (Expandir a Pesquisa)
nin carlos » nino carlos (Expandir a Pesquisa), otin carlos (Expandir a Pesquisa), lain carlos (Expandir a Pesquisa)
concept n » concept _ (Expandir a Pesquisa), concept a (Expandir a Pesquisa), concept 2 (Expandir a Pesquisa)
7.5 nacl » 3.5 nacl (Expandir a Pesquisa), 0.9 nacl (Expandir a Pesquisa)
nacl nin » nacl nano (Expandir a Pesquisa), nacl thin (Expandir a Pesquisa), nacl en (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 _ hobbs john agnew ) or ((( _ icu complex concept n ) or ( 7.5 nacl nin carlos navarro ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j _ hobbs john agnew ) OR ((( _ icu complex concept n ) OR ( 7.5 nacl nin carlos navarro )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j _ hobbs john agnew ) or ((( _ icu complex concept n ) or ( 7.5 nacl nin carlos navarro ))))*.