Talvez deva tentar algumas variações de ortografia:
mineral complex » several complex (Expandir a Pesquisa), central complex (Expandir a Pesquisa)
complex tran » complex trans (Expandir a Pesquisa), complex tehran (Expandir a Pesquisa), complex trait (Expandir a Pesquisa)
comps john » copps john (Expandir a Pesquisa), combs john (Expandir a Pesquisa), comisi john (Expandir a Pesquisa)
ion carlos » don carlos (Expandir a Pesquisa), con carlos (Expandir a Pesquisa), ron carlos (Expandir a Pesquisa)
carlos noe » carlos nobre (Expandir a Pesquisa), carlos nojek (Expandir a Pesquisa), carlos n (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 en (Expandir a Pesquisa), nacl co (Expandir a Pesquisa), nacl co2 (Expandir a Pesquisa)
ngoc » ngo (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 m comps john noe ) or ((( _ mineral complex tran ngoc ) or ( 7.5 nacl ion carlos noe ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j m comps john noe ) OR ((( _ mineral complex tran ngoc ) OR ( 7.5 nacl ion carlos noe )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j m comps john noe ) or ((( _ mineral complex tran ngoc ) or ( 7.5 nacl ion carlos noe ))))*.