Talvez deva tentar algumas variações de ortografia:
metal complex » metal complexes (Expandir a Pesquisa)
carlos newton » carlos nelson (Expandir a Pesquisa), santos newton (Expandir a Pesquisa)
complex trap » complex tap (Expandir a Pesquisa), complex trait (Expandir a Pesquisa), complex trans (Expandir a Pesquisa)
nabr carlos » najar carlos (Expandir a Pesquisa), nader carlos (Expandir a Pesquisa), jair carlos (Expandir a Pesquisa)
combs john » coombs john (Expandir a Pesquisa), coombes john (Expandir a Pesquisa), hobbs john (Expandir a Pesquisa)
john asnet » john agnew (Expandir a Pesquisa), john asger (Expandir a Pesquisa), john agnes (Expandir a Pesquisa)
trap ngoc » tran ngoc (Expandir a Pesquisa), tram ngoc (Expandir a Pesquisa), trang ngoc (Expandir a Pesquisa)
nacl nabr » nacl kbr (Expandir a Pesquisa), nacl nano (Expandir a Pesquisa)
e combs » sex combs (Expandir a Pesquisa)
5 metal » 5 metil (Expandir a Pesquisa), 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 john asnet ) or ((( 5 metal complex trap ngoc ) or ( 0.9 nacl nabr carlos newton ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j e combs john asnet ) OR ((( 5 metal complex trap ngoc ) OR ( 0.9 nacl nabr carlos newton )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j e combs john asnet ) or ((( 5 metal complex trap ngoc ) or ( 0.9 nacl nabr carlos newton ))))*.