Talvez deva tentar algumas variações de ortografia:
methods compared » method compared (Expandir a Pesquisa), methods comparison (Expandir a Pesquisa)
compared trinh » compared during (Expandir a Pesquisa), compared using (Expandir a Pesquisa), compare trial (Expandir a Pesquisa)
carlos mora » carlos morales (Expandir a Pesquisa), carlos moreira (Expandir a Pesquisa), carlos moreno (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)
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)
colin n » colin a (Expandir a Pesquisa), colin d (Expandir a Pesquisa), colin _ (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 colin n ) or ((( 5 methods compared trinh ngoc ) or ( 0.9 nacl kno carlos mora ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j m combs colin n ) OR ((( 5 methods compared trinh ngoc ) OR ( 0.9 nacl kno carlos mora )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j m combs colin n ) or ((( 5 methods compared trinh ngoc ) or ( 0.9 nacl kno carlos mora ))))*.