Talvez deva tentar algumas variações de ortografia:
metil complex » metal complex (Expandir a Pesquisa), metals complex (Expandir a Pesquisa), met complex (Expandir a Pesquisa)
carlos nocek » carlos nojek (Expandir a Pesquisa), carlos noceda (Expandir a Pesquisa), carlos nick (Expandir a Pesquisa)
combs anion » combs brandon (Expandir a Pesquisa), combs allison (Expandir a Pesquisa), combs daniel (Expandir a Pesquisa)
complex tam » complex tap (Expandir a Pesquisa), complex tac (Expandir a Pesquisa), complex tal (Expandir a Pesquisa)
anion net » anion bedt (Expandir a Pesquisa), anion na (Expandir a Pesquisa), anion ni2 (Expandir a Pesquisa)
en carlos » leon carlos (Expandir a Pesquisa), jaen carlos (Expandir a Pesquisa), chen carlos (Expandir a Pesquisa)
tam ngoc » tram ngoc (Expandir a Pesquisa), ta ngoc (Expandir a Pesquisa), lam ngoc (Expandir a Pesquisa)
3.5 nacl » 0.9 nacl (Expandir a Pesquisa)
5 metil » 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 _ combs anion net ) OR ((( 5 metil complex tam ngoc ) OR ( 3.5 nacl en carlos nocek ))))~.
• "As palabras AND, OR e NOT podem gerar pesquisas incorrectas; tente utilizar aspas": "(( j _ combs anion net ) OR ((( 5 metil complex tam ngoc ) OR ( 3.5 nacl en carlos nocek ))))".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j _ combs anion net ) OR ((( 5 metil complex tam ngoc ) OR ( 3.5 nacl en carlos nocek ))))*.