Talvez deva tentar algumas variações de ortografia:
complex concept » complex concepts (Expandir a Pesquisa), complex context (Expandir a Pesquisa), complex connects (Expandir a Pesquisa)
joint complex » joint computer (Expandir a Pesquisa)
nino carlos » cano carlos (Expandir a Pesquisa), bacino carlos (Expandir a Pesquisa), semino carlos (Expandir a Pesquisa)
carlos nara » carlos lara (Expandir a Pesquisa), carlos nava (Expandir a Pesquisa), carlos jara (Expandir a Pesquisa)
hobbs john » hobbs jean (Expandir a Pesquisa)
john agnew » john bagnell (Expandir a Pesquisa)
concept 10 » concept 15 (Expandir a Pesquisa), concept _ (Expandir a Pesquisa), concept a (Expandir a Pesquisa)
nacl nino » nacl nano (Expandir a Pesquisa), nacl kno (Expandir a Pesquisa), nacl mno (Expandir a Pesquisa)
3.5 nacl » 0.9 nacl (Expandir a Pesquisa)

You can also try:

• Europeana
• Digital Public Library of America
• CORE

Pode obter mais resultados ajustando a pesquisa.

• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j j hobbs john agnew ) OR ((( _ joint complex concept 10 ) OR ( 3.5 nacl nino carlos nara ))))~.
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j j hobbs john agnew ) or ((( _ joint complex concept 10 ) or ( 3.5 nacl nino carlos nara ))))*.