Talvez deva tentar algumas variações de ortografia:
casado carlos » casiano carlos (Expandir a Pesquisa), castano carlos (Expandir a Pesquisa), castro carlos (Expandir a Pesquisa)
metal complex » metal complexes (Expandir a Pesquisa)
complex trap » complex tap (Expandir a Pesquisa), complex trait (Expandir a Pesquisa), complex trans (Expandir a Pesquisa)
carlos nodal » carlos vidal (Expandir a Pesquisa), carlos nava (Expandir a Pesquisa), carlos nejar (Expandir a Pesquisa)
combs von » combs john (Expandir a Pesquisa), combs jan (Expandir a Pesquisa), combs dan (Expandir a Pesquisa)
von neuen » von namen (Expandir a Pesquisa)
trap ngo » trap net (Expandir a Pesquisa), sap ngo (Expandir a Pesquisa), trap co (Expandir a Pesquisa)
e combs » sex combs (Expandir a Pesquisa)
5 metal » 5 metil (Expandir a Pesquisa), 5 methyl (Expandir a Pesquisa)
nacl » natl (Expandir a Pesquisa), nac (Expandir a Pesquisa), nucl (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 von neuen ) or ((( 5 metal complex trap ngo ) or ( 0.9 nacl casado carlos nodal ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j e combs von neuen ) OR ((( 5 metal complex trap ngo ) OR ( 0.9 nacl casado carlos nodal )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j e combs von neuen ) or ((( 5 metal complex trap ngo ) or ( 0.9 nacl casado carlos nodal ))))*.