Talvez deva tentar algumas variações de ortografia:
methanol cobalt » methane cobalt (Expandir a Pesquisa), ethane cobalt (Expandir a Pesquisa), metal cobalt (Expandir a Pesquisa)
cobalt trieu » cobalt trial (Expandir a Pesquisa), cobalt tris (Expandir a Pesquisa), cobalt traces (Expandir a Pesquisa)
cano carlos » luciano carlos (Expandir a Pesquisa), bacino carlos (Expandir a Pesquisa), solano carlos (Expandir a Pesquisa)
carlos nora » carlos mora (Expandir a Pesquisa), carlos nara (Expandir a Pesquisa), carlos noa (Expandir a Pesquisa)
_ methanol » _ methane (Expandir a Pesquisa)
trieu ngoc » tieu ngoc (Expandir a Pesquisa), trieu ngoa (Expandir a Pesquisa), trinh ngoc (Expandir a Pesquisa)
natl cano » saul cano (Expandir a Pesquisa), paul cano (Expandir a Pesquisa), val cano (Expandir a Pesquisa)
7.5 natl » 7.5 nacl (Expandir a Pesquisa), 3.5 nacl (Expandir a Pesquisa)
m combs » m coombs (Expandir a Pesquisa), e combs (Expandir a Pesquisa), _ combs (Expandir a Pesquisa)
combs c » combs _ (Expandir a Pesquisa)
c neto » _ neto (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 combs c neto ) or ((( _ methanol cobalt trieu ngoc ) or ( 7.5 natl cano carlos nora ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j m combs c neto ) OR ((( _ methanol cobalt trieu ngoc ) OR ( 7.5 natl cano carlos nora )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j m combs c neto ) or ((( _ methanol cobalt trieu ngoc ) or ( 7.5 natl cano carlos nora ))))*.