Talvez deva tentar algumas variações de ortografia:
complex concept » complex concepts (Expandir a Pesquisa), complex context (Expandir a Pesquisa), complex connects (Expandir a Pesquisa)
coombs johnson » coombs john (Expandir a Pesquisa), cook johnson (Expandir a Pesquisa), coombs jason (Expandir a Pesquisa)
joint complex » joint computer (Expandir a Pesquisa)
johnson neil » johnson n (Expandir a Pesquisa)
carlos nara » carlos lara (Expandir a Pesquisa), carlos nava (Expandir a Pesquisa), carlos jara (Expandir a Pesquisa)
concept n » concept _ (Expandir a Pesquisa), concept a (Expandir a Pesquisa), concept 2 (Expandir a Pesquisa)
l coombs » l coombes (Expandir a Pesquisa), g coombs (Expandir a Pesquisa), _ coombs (Expandir a Pesquisa)
7.5 nacl » 3.5 nacl (Expandir a Pesquisa), 0.9 nacl (Expandir a Pesquisa)
nacl a » nacl _ (Expandir a Pesquisa), nacl y (Expandir a Pesquisa), nacl e (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 coombs johnson neil ) or ((( _ joint complex concept n ) or ( 7.5 nacl a carlos nara ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j l coombs johnson neil ) OR ((( _ joint complex concept n ) OR ( 7.5 nacl a carlos nara )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j l coombs johnson neil ) or ((( _ joint complex concept n ) or ( 7.5 nacl a carlos nara ))))*.