Talvez deva tentar algumas variações de ortografia:
metal complex » metal complexes (Expandir a Pesquisa)
complex tail » complex trait (Expandir a Pesquisa), complex task (Expandir a Pesquisa), complex thin (Expandir a Pesquisa)
carlos nojek » carlos nunez (Expandir a Pesquisa), carlos nunes (Expandir a Pesquisa), carlos nejar (Expandir a Pesquisa)
combs con » combs colin (Expandir a Pesquisa), combs john (Expandir a Pesquisa), combs c (Expandir a Pesquisa)
nacl jaen » nacl en (Expandir a Pesquisa), paul jaen (Expandir a Pesquisa)
con neue » con nee (Expandir a Pesquisa), von neuen (Expandir a Pesquisa), con neuro (Expandir a Pesquisa)
tail ngo » tail co (Expandir a Pesquisa), tail non (Expandir a Pesquisa)
l combs » e combs (Expandir a Pesquisa), _ combs (Expandir a Pesquisa), l comps (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 l combs con neue ) OR ((( 5 metal complex tail ngo ) OR ( 0.9 nacl jaen carlos nojek ))))~.
• "As palabras AND, OR e NOT podem gerar pesquisas incorrectas; tente utilizar aspas": "(( j l combs con neue ) OR ((( 5 metal complex tail ngo ) OR ( 0.9 nacl jaen carlos nojek ))))".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j l combs con neue ) OR ((( 5 metal complex tail ngo ) OR ( 0.9 nacl jaen carlos nojek ))))*.