Talvez deva tentar algumas variações de ortografia:
central complex » several complex (Expandir a Pesquisa)
complex trex » complex tree (Expandir a Pesquisa), complex tetrex (Expandir a Pesquisa), complex text (Expandir a Pesquisa)
carlos noel » carlos joel (Expandir a Pesquisa), carlos noe (Expandir a Pesquisa), carlos yoel (Expandir a Pesquisa)
23 central » 3 central (Expandir a Pesquisa), t3 central (Expandir a Pesquisa), 1.3 central (Expandir a Pesquisa)
co2 carlos » 232 carlos (Expandir a Pesquisa), co2 carbon (Expandir a Pesquisa), co2 cenarios (Expandir a Pesquisa)
copp john » copps john (Expandir a Pesquisa), dopp john (Expandir a Pesquisa), cupp john (Expandir a Pesquisa)
john noel » john joel (Expandir a Pesquisa), john nigel (Expandir a Pesquisa), jean noel (Expandir a Pesquisa)
trex ngoc » trieu ngoc (Expandir a Pesquisa), tran ngoc (Expandir a Pesquisa), tien ngoc (Expandir a Pesquisa)
7.5 nacl » 3.5 nacl (Expandir a Pesquisa), 0.9 nacl (Expandir a Pesquisa)
nacl co2 » nacl co (Expandir a Pesquisa)
j copp » j comp (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 copp john noel ) or ((( 23 central complex trex ngoc ) or ( 7.5 nacl co2 carlos noel ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j j copp john noel ) OR ((( 23 central complex trex ngoc ) OR ( 7.5 nacl co2 carlos noel )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j j copp john noel ) or ((( 23 central complex trex ngoc ) or ( 7.5 nacl co2 carlos noel ))))*.