Talvez deva tentar algumas variações de ortografia:
metal complex » metal complexes (Expandir a Pesquisa)
complex tram » complex trauma (Expandir a Pesquisa), complex trait (Expandir a Pesquisa), complex trial (Expandir a Pesquisa)
combs bacon » com bacon (Expandir a Pesquisa), combs jason (Expandir a Pesquisa), combs brandon (Expandir a Pesquisa)
knox carlos » knopf carlos (Expandir a Pesquisa), knox charles (Expandir a Pesquisa), knox carl (Expandir a Pesquisa)
carlos naa » carlos nava (Expandir a Pesquisa), carlos nara (Expandir a Pesquisa), carlos noa (Expandir a Pesquisa)
bacon new » bacon's new (Expandir a Pesquisa), bacon neil (Expandir a Pesquisa), bacon e (Expandir a Pesquisa)
tram ngoc » tran ngoc (Expandir a Pesquisa), tam ngoc (Expandir a Pesquisa), pham ngoc (Expandir a Pesquisa)
nacl knox » nacl kno (Expandir a Pesquisa), nacl mno (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 bacon new ) OR ((( 5 metal complex tram ngoc ) OR ( 0.9 nacl knox carlos naa ))))~.
• "As palabras AND, OR e NOT podem gerar pesquisas incorrectas; tente utilizar aspas": "(( j l combs bacon new ) OR ((( 5 metal complex tram ngoc ) OR ( 0.9 nacl knox carlos naa ))))".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j l combs bacon new ) OR ((( 5 metal complex tram ngoc ) OR ( 0.9 nacl knox carlos naa ))))*.