Talvez deva tentar algumas variações de ortografia:
central complex » several complex (Expandir a Pesquisa)
complex text » complete text (Expandir a Pesquisa), complex tear (Expandir a Pesquisa), complex context (Expandir a Pesquisa)
copps john » coppin john (Expandir a Pesquisa), apps john (Expandir a Pesquisa), lopes john (Expandir a Pesquisa)
ion carlos » ione carlos (Expandir a Pesquisa), con carlos (Expandir a Pesquisa), don carlos (Expandir a Pesquisa)
carlos noe » carlos noel (Expandir a Pesquisa), carlos noa (Expandir a Pesquisa), carlos nojek (Expandir a Pesquisa)
text ngoc » text nlo (Expandir a Pesquisa), text non (Expandir a Pesquisa), text now (Expandir a Pesquisa)
john noe » john noel (Expandir a Pesquisa), john noh (Expandir a Pesquisa), john noble (Expandir a Pesquisa)
7.5 nacl » 3.5 nacl (Expandir a Pesquisa), 0.9 nacl (Expandir a Pesquisa)
nacl ion » nacl tio2 (Expandir a Pesquisa), nacl upon (Expandir a Pesquisa), nacl en (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 _ copps john noe ) or ((( 2 central complex text ngoc ) or ( 7.5 nacl ion carlos noe ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j _ copps john noe ) OR ((( 2 central complex text ngoc ) OR ( 7.5 nacl ion carlos noe )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j _ copps john noe ) or ((( 2 central complex text ngoc ) or ( 7.5 nacl ion carlos noe ))))*.