Talvez deva tentar algumas variações de ortografia:
methane cycle » methane cycling (Expandir a Pesquisa), methionine cycle (Expandir a Pesquisa)
semino carlos » serrano carlos (Expandir a Pesquisa), bacino carlos (Expandir a Pesquisa), solano carlos (Expandir a Pesquisa)
cycle times » cycle time (Expandir a Pesquisa), cycle timing (Expandir a Pesquisa)
carlos nora » carlos mora (Expandir a Pesquisa), carlos nara (Expandir a Pesquisa), carlos noa (Expandir a Pesquisa)
times ngoc » times now (Expandir a Pesquisa)
a methane » _ methane (Expandir a Pesquisa), a methadone (Expandir a Pesquisa), a methanol (Expandir a Pesquisa)
g coombs » _ coombs (Expandir a Pesquisa)
coombs c » coombs r (Expandir a Pesquisa), coombs g (Expandir a Pesquisa), coombs j (Expandir a Pesquisa)
c net » c neto (Expandir a Pesquisa), _ net (Expandir a Pesquisa), u net (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 g coombs c net ) or ((( a methane cycle times ngoc ) or ( 3.5 nacl semino carlos nora ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j g coombs c net ) OR ((( a methane cycle times ngoc ) OR ( 3.5 nacl semino carlos nora )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j g coombs c net ) or ((( a methane cycle times ngoc ) or ( 3.5 nacl semino carlos nora ))))*.