Talvez deva tentar algumas variações de ortografia:
methods compared » method compared (Expandir a Pesquisa), methods comparison (Expandir a Pesquisa)
compared than » compared can (Expandir a Pesquisa), compared three (Expandir a Pesquisa), complex than (Expandir a Pesquisa)
carlos nojek » carlos nunez (Expandir a Pesquisa), carlos nunes (Expandir a Pesquisa), carlos nejar (Expandir a Pesquisa)
can carlos » cano carlos (Expandir a Pesquisa), chan carlos (Expandir a Pesquisa), san carlos (Expandir a Pesquisa)
colin new » coli new (Expandir a Pesquisa), colic new (Expandir a Pesquisa), colon new (Expandir a Pesquisa)
5 methods » 5 methoxy (Expandir a Pesquisa)
than ngo » thang ngo (Expandir a Pesquisa), thanh ngo (Expandir a Pesquisa), thuan ngo (Expandir a Pesquisa)
nacl can » nacl cacl (Expandir a Pesquisa), nacl nano (Expandir a Pesquisa), nacl en (Expandir a Pesquisa)
3 nacl » _ nacl (Expandir a Pesquisa), 3.5 nacl (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 new ) or ((( 5 methods compared than ngo ) or ( 3 nacl can carlos nojek ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j _ combs colin new ) OR ((( 5 methods compared than ngo ) OR ( 3 nacl can carlos nojek )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j _ combs colin new ) or ((( 5 methods compared than ngo ) or ( 3 nacl can carlos nojek ))))*.