Talvez deva tentar algumas variações de ortografia:
methanol cobalt » methane cobalt (Expandir a Pesquisa), ethane cobalt (Expandir a Pesquisa), metal cobalt (Expandir a Pesquisa)
mario carlos » mario carlo (Expandir a Pesquisa), rio carlos (Expandir a Pesquisa), julio carlos (Expandir a Pesquisa)
carlos nora » carlos mora (Expandir a Pesquisa), carlos nara (Expandir a Pesquisa), carlos noa (Expandir a Pesquisa)
coombs con » coombs john (Expandir a Pesquisa), coombs ian (Expandir a Pesquisa), coombs c (Expandir a Pesquisa)
o methanol » _ methanol (Expandir a Pesquisa), a methanol (Expandir a Pesquisa), 80 methanol (Expandir a Pesquisa)
cobalt thi » cobalt thin (Expandir a Pesquisa), cobalt tris (Expandir a Pesquisa), cobalt di (Expandir a Pesquisa)
m coombs » m coombes (Expandir a Pesquisa), _ coombs (Expandir a Pesquisa), g coombs (Expandir a Pesquisa)
con new » icon new (Expandir a Pesquisa), con nee (Expandir a Pesquisa), con net (Expandir a Pesquisa)
thi ngo » thi ngoc (Expandir a Pesquisa), thi nga (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 m coombs con new ) or ((( o methanol cobalt thi ngo ) or ( 3.5 nacl mario carlos nora ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j m coombs con new ) OR ((( o methanol cobalt thi ngo ) OR ( 3.5 nacl mario carlos nora )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j m coombs con new ) or ((( o methanol cobalt thi ngo ) or ( 3.5 nacl mario carlos nora ))))*.