Talvez deva tentar algumas variações de ortografia:
methods compared » method compared (Expandir a Pesquisa), methods comparison (Expandir a Pesquisa)
compared via » compared a (Expandir a Pesquisa), compared i (Expandir a Pesquisa), compared ii (Expandir a Pesquisa)
marco carlos » marcio carlos (Expandir a Pesquisa), mario carlos (Expandir a Pesquisa), marcelo carlos (Expandir a Pesquisa)
carlos nora » carlos mora (Expandir a Pesquisa), carlos nara (Expandir a Pesquisa), carlos noa (Expandir a Pesquisa)
nacl marco » cscl marco (Expandir a Pesquisa)
5 methods » 5 methoxy (Expandir a Pesquisa)
via ngoc » vinh ngoc (Expandir a Pesquisa), giao ngoc (Expandir a Pesquisa), vu ngoc (Expandir a Pesquisa)
3.5 nacl » 0.9 nacl (Expandir a Pesquisa), 3 nacl (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 _ combs colin n ) or ((( 5 methods compared via ngoc ) or ( 3.5 nacl marco carlos nora ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j _ combs colin n ) OR ((( 5 methods compared via ngoc ) OR ( 3.5 nacl marco carlos nora )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j _ combs colin n ) or ((( 5 methods compared via ngoc ) or ( 3.5 nacl marco carlos nora ))))*.