Talvez deva tentar algumas variações de ortografia:
semino carlos » serrano carlos (Expandir a Pesquisa), bacino carlos (Expandir a Pesquisa), solano carlos (Expandir a Pesquisa)
methane coal » methane cobalt (Expandir a Pesquisa), methane cycle (Expandir a Pesquisa), methane a (Expandir a Pesquisa)
carlos nora » carlos mora (Expandir a Pesquisa), carlos nara (Expandir a Pesquisa), carlos noa (Expandir a Pesquisa)
combs john » coombs john (Expandir a Pesquisa), combes john (Expandir a Pesquisa), coombes john (Expandir a Pesquisa)
thien ngoc » tien ngoc (Expandir a Pesquisa), thi ngoc (Expandir a Pesquisa), hieu ngoc (Expandir a Pesquisa)
o methane » go methane (Expandir a Pesquisa), _ methane (Expandir a Pesquisa), a methane (Expandir a Pesquisa)
john new » john agnew (Expandir a Pesquisa), john neil (Expandir a Pesquisa), john noel (Expandir a Pesquisa)
m combs » m coombs (Expandir a Pesquisa), e combs (Expandir a Pesquisa), _ combs (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 combs john new ) or ((( o methane coal thien ngoc ) or ( 3.5 nacl semino carlos nora ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j m combs john new ) OR ((( o methane coal thien ngoc ) OR ( 3.5 nacl semino carlos nora )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j m combs john new ) or ((( o methane coal thien ngoc ) or ( 3.5 nacl semino carlos nora ))))*.