Talvez deva tentar algumas variações de ortografia:
metal complex » metal complexes (Expandir a Pesquisa)
complex tras » complex trans (Expandir a Pesquisa), complex tris (Expandir a Pesquisa), complex trs (Expandir a Pesquisa)
nano carlos » cano carlos (Expandir a Pesquisa), nino carlos (Expandir a Pesquisa), nuno carlos (Expandir a Pesquisa)
carlos nino » carlos patino (Expandir a Pesquisa), carlos merino (Expandir a Pesquisa), carlos nunez (Expandir a Pesquisa)
combs john » coombs john (Expandir a Pesquisa), coombes john (Expandir a Pesquisa), hobbs john (Expandir a Pesquisa)
tras ngoc » tran ngoc (Expandir a Pesquisa), tram ngoc (Expandir a Pesquisa), tra ngoc (Expandir a Pesquisa)
nacl nano » nacl kno (Expandir a Pesquisa), nacl nabr (Expandir a Pesquisa), nacl naoh (Expandir a Pesquisa)
john net » john new (Expandir a Pesquisa), john neetu (Expandir a Pesquisa), john asnet (Expandir a Pesquisa)
l combs » e combs (Expandir a Pesquisa), _ combs (Expandir a Pesquisa), l comps (Expandir a Pesquisa)
5 metal » 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 l combs john net ) or ((( 5 metal complex tras ngoc ) or ( 3.5 nacl nano carlos nino ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j l combs john net ) OR ((( 5 metal complex tras ngoc ) OR ( 3.5 nacl nano carlos nino )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j l combs john net ) or ((( 5 metal complex tras ngoc ) or ( 3.5 nacl nano carlos nino ))))*.