Talvez deva tentar algumas variações de ortografia:
methods comparison » method comparison (Expandir a Pesquisa)
comparison trinh » comparison trial (Expandir a Pesquisa), comparison thigh (Expandir a Pesquisa), comparison during (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), coombes john (Expandir a Pesquisa), hobbs john (Expandir a Pesquisa)
trinh ngoc » trinh quoc (Expandir a Pesquisa), dinh ngoc (Expandir a Pesquisa), minh ngoc (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)
john new » john agnew (Expandir a Pesquisa), john neil (Expandir a Pesquisa), john n (Expandir a Pesquisa)
nacl kno » nacl nano (Expandir a Pesquisa), nacl en (Expandir a Pesquisa), nacl kcl (Expandir a Pesquisa)
m combs » m coombs (Expandir a Pesquisa), e combs (Expandir a Pesquisa), _ combs (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 ((( 5 methods comparison trinh ngoc ) or ( 0.9 nacl kno carlos nora ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j m combs john new ) OR ((( 5 methods comparison trinh ngoc ) OR ( 0.9 nacl kno carlos nora )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j m combs john new ) or ((( 5 methods comparison trinh ngoc ) or ( 0.9 nacl kno carlos nora ))))*.