Talvez deva tentar algumas variações de ortografia:
methods compared » method compared (Expandir a Pesquisa), methods comparison (Expandir a Pesquisa)
compared bich » compared being (Expandir a Pesquisa), compare bio (Expandir a Pesquisa), compared i (Expandir a Pesquisa)
carlos nora » carlos mora (Expandir a Pesquisa), carlos nara (Expandir a Pesquisa), carlos noa (Expandir a Pesquisa)
coombs dan » coombs dane (Expandir a Pesquisa), coombs ian (Expandir a Pesquisa), combs dan (Expandir a Pesquisa)
kno carlos » knopf carlos (Expandir a Pesquisa), cano carlos (Expandir a Pesquisa), nino carlos (Expandir a Pesquisa)
5 methods » 5 methoxy (Expandir a Pesquisa)
nacl kno » nacl nano (Expandir a Pesquisa), nacl en (Expandir a Pesquisa), nacl kcl (Expandir a Pesquisa)
dan net » dan neal (Expandir a Pesquisa)
ngoc » ngo (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 _ coombs dan net ) or ((( 5 methods compared bich ngoc ) or ( 0.9 nacl kno carlos nora ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j _ coombs dan net ) OR ((( 5 methods compared bich ngoc ) OR ( 0.9 nacl kno carlos nora )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j _ coombs dan net ) or ((( 5 methods compared bich ngoc ) or ( 0.9 nacl kno carlos nora ))))*.