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 mora » carlos morales (Expandir a Pesquisa), carlos moreira (Expandir a Pesquisa), carlos moreno (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)
trinh quo » trinh quoc (Expandir a Pesquisa), trinh muoi (Expandir a Pesquisa), trinh quan (Expandir a Pesquisa)
m coomes » m coombes (Expandir a Pesquisa), a coomes (Expandir a Pesquisa), m coombs (Expandir a Pesquisa)
coomes c » coombes c (Expandir a Pesquisa), coomes e (Expandir a Pesquisa), toomes c (Expandir a Pesquisa)
nacl kno » nacl nano (Expandir a Pesquisa), nacl en (Expandir a Pesquisa), nacl kcl (Expandir a Pesquisa)
c notes » pc notes (Expandir a Pesquisa), _ notes (Expandir a Pesquisa), c nones (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 coomes c notes ) OR ((( 5 methods comparison trinh quo ) OR ( 0.9 nacl kno carlos mora ))))~.
• "As palabras AND, OR e NOT podem gerar pesquisas incorrectas; tente utilizar aspas": "(( j m coomes c notes ) OR ((( 5 methods comparison trinh quo ) OR ( 0.9 nacl kno carlos mora ))))".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j m coomes c notes ) OR ((( 5 methods comparison trinh quo ) OR ( 0.9 nacl kno carlos mora ))))*.