Talvez deva tentar algumas variações de ortografia:
complex concept » complex concepts (Expandir a Pesquisa), complex context (Expandir a Pesquisa), complex connects (Expandir a Pesquisa)
fact complex » factor complex (Expandir a Pesquisa), factor complexes (Expandir a Pesquisa), coat complex (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)
concept a » concept _ (Expandir a Pesquisa)
nacl nino » nacl nano (Expandir a Pesquisa), nacl kno (Expandir a Pesquisa), nacl mno (Expandir a Pesquisa)
k coombs » k coombes (Expandir a Pesquisa), g coombs (Expandir a Pesquisa), _ coombs (Expandir a Pesquisa)
john new » john agnew (Expandir a Pesquisa), john neil (Expandir a Pesquisa), john n (Expandir a Pesquisa)
_ fact » _ facts (Expandir a Pesquisa), _ face (Expandir a Pesquisa), _ factor (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 k coombs john new ) or ((( _ fact complex concept a ) or ( 0.9 nacl nino carlos nara ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j k coombs john new ) OR ((( _ fact complex concept a ) OR ( 0.9 nacl nino carlos nara )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j k coombs john new ) or ((( _ fact complex concept a ) or ( 0.9 nacl nino carlos nara ))))*.