Talvez deva tentar algumas variações de ortografia:
complex concept » complex concepts (Expandir a Pesquisa), complex context (Expandir a Pesquisa), complex connects (Expandir a Pesquisa)
coombes john » coombs john (Expandir a Pesquisa), combes john (Expandir a Pesquisa), coombes jason (Expandir a Pesquisa)
ifn complex » can complex (Expandir a Pesquisa), lyn complex (Expandir a Pesquisa), cn complex (Expandir a Pesquisa)
nano carlos » cano carlos (Expandir a Pesquisa), nino carlos (Expandir a Pesquisa), nuno carlos (Expandir a Pesquisa)
carlos nav » carlos nava (Expandir a Pesquisa), carlos navas (Expandir a Pesquisa), carlos nara (Expandir a Pesquisa)
k coombes » l coomber (Expandir a Pesquisa)
concept n » concept _ (Expandir a Pesquisa), concept a (Expandir a Pesquisa), concept 2 (Expandir a Pesquisa)
nacl nano » nacl kno (Expandir a Pesquisa), nacl nabr (Expandir a Pesquisa), nacl naoh (Expandir a Pesquisa)
john new » john agnew (Expandir a Pesquisa), john neil (Expandir a Pesquisa), john noel (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 coombes john new ) or ((( _ ifn complex concept n ) or ( 3.5 nacl nano carlos nav ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j k coombes john new ) OR ((( _ ifn complex concept n ) OR ( 3.5 nacl nano carlos nav )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j k coombes john new ) or ((( _ ifn complex concept n ) or ( 3.5 nacl nano carlos nav ))))*.