Talvez deva tentar algumas variações de ortografia:
methane cobalt » ethane cobalt (Expandir a Pesquisa), methanol cobalt (Expandir a Pesquisa), methane coal (Expandir a Pesquisa)
semino carlos » serrano carlos (Expandir a Pesquisa), bacino carlos (Expandir a Pesquisa), solano carlos (Expandir a Pesquisa)
carlos mora » carlos morales (Expandir a Pesquisa), carlos moreira (Expandir a Pesquisa), carlos moreno (Expandir a Pesquisa)
coombs con » coombs john (Expandir a Pesquisa), coombs ian (Expandir a Pesquisa), coombs c (Expandir a Pesquisa)
trial ngoc » trinh ngoc (Expandir a Pesquisa), trial noa (Expandir a Pesquisa), trial neo (Expandir a Pesquisa)
o methane » go methane (Expandir a Pesquisa), _ methane (Expandir a Pesquisa), a methane (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)
nacl » natl (Expandir a Pesquisa), nac (Expandir a Pesquisa), nucl (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 methane cobalt trial ngoc ) or ( 3.5 nacl semino carlos mora ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j m coombs con new ) OR ((( o methane cobalt trial ngoc ) OR ( 3.5 nacl semino carlos mora )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j m coombs con new ) or ((( o methane cobalt trial ngoc ) or ( 3.5 nacl semino carlos mora ))))*.