Talvez deva tentar algumas variações de ortografia:
signal complex » signaling complex (Expandir a Pesquisa), signal complexity (Expandir a Pesquisa), clonal complex (Expandir a Pesquisa)
complex stones » complex tones (Expandir a Pesquisa), complex stone (Expandir a Pesquisa), complex histones (Expandir a Pesquisa)
carlos nino » carlos patino (Expandir a Pesquisa), carlos merino (Expandir a Pesquisa), carlos nunez (Expandir a Pesquisa)
hobbs john » hobbs jean (Expandir a Pesquisa)
john notas » con notas (Expandir a Pesquisa), john nova (Expandir a Pesquisa), john noah (Expandir a Pesquisa)
stones new » stone new (Expandir a Pesquisa), histones new (Expandir a Pesquisa), stones e (Expandir a Pesquisa)
gil carlos » gil campos (Expandir a Pesquisa)
5 signal » 5 signals (Expandir a Pesquisa), l5 signal (Expandir a Pesquisa), ac signal (Expandir a Pesquisa)
nacl gil » nacl kcl (Expandir a Pesquisa), nacl gum (Expandir a Pesquisa), nacl i (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 j hobbs john notas ) or ((( 5 signal complex stones new ) or ( 0.9 nacl gil carlos nino ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j j hobbs john notas ) OR ((( 5 signal complex stones new ) OR ( 0.9 nacl gil carlos nino )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j j hobbs john notas ) or ((( 5 signal complex stones new ) or ( 0.9 nacl gil carlos nino ))))*.