Talvez deva tentar algumas variações de ortografia:
methods compared » method compared (Expandir a Pesquisa), methods comparison (Expandir a Pesquisa)
compared tran » compared can (Expandir a Pesquisa), compared boron (Expandir a Pesquisa), compared great (Expandir a Pesquisa)
carlos nojek » carlos nunez (Expandir a Pesquisa), carlos nunes (Expandir a Pesquisa), carlos nejar (Expandir a Pesquisa)
combs folic » combs colin (Expandir a Pesquisa)
knot carlos » knopf carlos (Expandir a Pesquisa), enout carlos (Expandir a Pesquisa), knotz carlo (Expandir a Pesquisa)
5 methods » 5 methoxy (Expandir a Pesquisa)
tran ngo » tran ngoc (Expandir a Pesquisa), tran nho (Expandir a Pesquisa), tran nga (Expandir a Pesquisa)
nac knot » a knot (Expandir a Pesquisa), nac nor (Expandir a Pesquisa)
l combs » e combs (Expandir a Pesquisa), _ combs (Expandir a Pesquisa), l comps (Expandir a Pesquisa)
folic m » colic m (Expandir a Pesquisa), golic m (Expandir a Pesquisa), folic _ (Expandir a Pesquisa)
a nac » _ nac (Expandir a Pesquisa), a nao (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 l combs folic m ) or ((( 5 methods compared tran ngo ) or ( a nac knot carlos nojek ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j l combs folic m ) OR ((( 5 methods compared tran ngo ) OR ( a nac knot carlos nojek )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j l combs folic m ) or ((( 5 methods compared tran ngo ) or ( a nac knot carlos nojek ))))*.