Talvez deva tentar algumas variações de ortografia:
metal complex » metal complexes (Expandir a Pesquisa)
coombes john » coombs john (Expandir a Pesquisa), coombes jason (Expandir a Pesquisa), forbes john (Expandir a Pesquisa)
traits ngoc » traits non (Expandir a Pesquisa), traits anger (Expandir a Pesquisa)
nano carlos » cano carlos (Expandir a Pesquisa), nino carlos (Expandir a Pesquisa), nuno carlos (Expandir a Pesquisa)
carlos noel » carlos joel (Expandir a Pesquisa), carlos noe (Expandir a Pesquisa), carlos yoel (Expandir a Pesquisa)
k coombes » l coomber (Expandir a Pesquisa)
nacl nano » nacl kno (Expandir a Pesquisa), nacl nabr (Expandir a Pesquisa)
7.5 nacl » 3.5 nacl (Expandir a Pesquisa), 7.2 nacl (Expandir a Pesquisa), 0.9 nacl (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 k coombes john n ) or ((( 5 metal complex traits ngoc ) or ( 7.5 nacl nano carlos noel ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j k coombes john n ) OR ((( 5 metal complex traits ngoc ) OR ( 7.5 nacl nano carlos noel )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j k coombes john n ) or ((( 5 metal complex traits ngoc ) or ( 7.5 nacl nano carlos noel ))))*.