Talvez deva tentar algumas variações de ortografia:
methyl complex » metal complex (Expandir a Pesquisa), method complex (Expandir a Pesquisa), methylase complex (Expandir a Pesquisa)
carlos kosera » carlos morera (Expandir a Pesquisa), carlos coser (Expandir a Pesquisa), carlos lopera (Expandir a Pesquisa)
complex tail » complex trait (Expandir a Pesquisa), complex task (Expandir a Pesquisa), complex thin (Expandir a Pesquisa)
knopf carlos » prof carlos (Expandir a Pesquisa)
nacl knopf » nacl kno (Expandir a Pesquisa)
combs con » combs colin (Expandir a Pesquisa), combs john (Expandir a Pesquisa), combs cody (Expandir a Pesquisa)
tail ngoc » tai ngoc (Expandir a Pesquisa), tail non (Expandir a Pesquisa)
con noe » con note (Expandir a Pesquisa), con node (Expandir a Pesquisa), con nee (Expandir a Pesquisa)
3 nacl » _ nacl (Expandir a Pesquisa), m nacl (Expandir a Pesquisa), 3.5 nacl (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 _ combs con noe ) OR ((( 5 methyl complex tail ngoc ) OR ( 3 nacl knopf carlos kosera ))))~.
• "As palabras AND, OR e NOT podem gerar pesquisas incorrectas; tente utilizar aspas": "(( j _ combs con noe ) OR ((( 5 methyl complex tail ngoc ) OR ( 3 nacl knopf carlos kosera ))))".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j _ combs con noe ) OR ((( 5 methyl complex tail ngoc ) OR ( 3 nacl knopf carlos kosera ))))*.