Talvez deva tentar algumas variações de ortografia:
methyl complex » metal complex (Expandir a Pesquisa), method complex (Expandir a Pesquisa), methylase complex (Expandir a Pesquisa)
complex time » complex tissue (Expandir a Pesquisa), complex tones (Expandir a Pesquisa), complex three (Expandir a Pesquisa)
kcl carlos » kuhl carlos (Expandir a Pesquisa), gil carlos (Expandir a Pesquisa), l carlos (Expandir a Pesquisa)
combs con » combs colin (Expandir a Pesquisa), combs john (Expandir a Pesquisa), combs c (Expandir a Pesquisa)
time ngo » time nano (Expandir a Pesquisa), time non (Expandir a Pesquisa), time new (Expandir a Pesquisa)
l combs » e combs (Expandir a Pesquisa), _ combs (Expandir a Pesquisa), l comps (Expandir a Pesquisa)
con new » icon new (Expandir a Pesquisa), con nee (Expandir a Pesquisa), con net (Expandir a Pesquisa)
7.5 nac » 7.5 nacl (Expandir a Pesquisa), 3.5 nacl (Expandir a Pesquisa)
nac kcl » nacl kcl (Expandir a Pesquisa)
negrao » negras (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 new ) OR ((( 5 methyl complex time ngo ) OR ( 7.5 nac kcl carlos negrao ))))~.
• "As palabras AND, OR e NOT podem gerar pesquisas incorrectas; tente utilizar aspas": "(( j l combs con new ) OR ((( 5 methyl complex time ngo ) OR ( 7.5 nac kcl carlos negrao ))))".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j l combs con new ) OR ((( 5 methyl complex time ngo ) OR ( 7.5 nac kcl carlos negrao ))))*.