Talvez deva tentar algumas variações de ortografia:
complex concept » complex concepts (Expandir a Pesquisa), complex context (Expandir a Pesquisa), complex connects (Expandir a Pesquisa)
cst complex » coat complex (Expandir a Pesquisa), corest complex (Expandir a Pesquisa), guest complex (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)
kno carlos » cano carlos (Expandir a Pesquisa), nino carlos (Expandir a Pesquisa), pino carlos (Expandir a Pesquisa)
concept n » concept _ (Expandir a Pesquisa), concept a (Expandir a Pesquisa), concept 2 (Expandir a Pesquisa)
0.9 nacl » 3.5 nacl (Expandir a Pesquisa)
nacl kno » nacl nano (Expandir a Pesquisa), nacl en (Expandir a Pesquisa), nacl kcl (Expandir a Pesquisa)
_ cst » _ csf (Expandir a Pesquisa), _ csr (Expandir a Pesquisa), _ csp (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 ((( _ cst complex concept n ) or ( 0.9 nacl kno carlos nara ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j _ hobbs john agnew ) OR ((( _ cst complex concept n ) OR ( 0.9 nacl kno carlos nara )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j _ hobbs john agnew ) or ((( _ cst complex concept n ) or ( 0.9 nacl kno carlos nara ))))*.