Talvez deva tentar algumas variações de ortografia:
complex trace » complex traces (Expandir a Pesquisa), complex tracks (Expandir a Pesquisa), complex trait (Expandir a Pesquisa)
metil complex » metal complex (Expandir a Pesquisa), metals complex (Expandir a Pesquisa), met complex (Expandir a Pesquisa)
carlos patino » carlos patricio (Expandir a Pesquisa), carlos pardo (Expandir a Pesquisa)
trace image » tract images (Expandir a Pesquisa), face image (Expandir a Pesquisa), space image (Expandir a Pesquisa)
nano carlos » cano carlos (Expandir a Pesquisa), nino carlos (Expandir a Pesquisa), nuno carlos (Expandir a Pesquisa)
combs jan » coombs jana (Expandir a Pesquisa), combs john (Expandir a Pesquisa), combs j (Expandir a Pesquisa)
nacl nano » nacl kno (Expandir a Pesquisa), nacl nabr (Expandir a Pesquisa)
3.5 nacl » 0.9 nacl (Expandir a Pesquisa), 3 nacl (Expandir a Pesquisa)
e combs » sex combs (Expandir a Pesquisa)
jan net » dan net (Expandir a Pesquisa), can net (Expandir a Pesquisa), jan nel (Expandir a Pesquisa)
5 metil » 5 methyl (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 e combs jan net ) or ((( 5 metil complex trace image ) or ( 3.5 nacl nano carlos patino ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j e combs jan net ) OR ((( 5 metil complex trace image ) OR ( 3.5 nacl nano carlos patino )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j e combs jan net ) or ((( 5 metil complex trace image ) or ( 3.5 nacl nano carlos patino ))))*.