Talvez deva tentar algumas variações de ortografia:
methods compared » method compared (Expandir a Pesquisa), methods comparison (Expandir a Pesquisa)
compared series » complex series (Expandir a Pesquisa), combined series (Expandir a Pesquisa), compound series (Expandir a Pesquisa)
series ngoc » series nos (Expandir a Pesquisa), series nao (Expandir a Pesquisa), series non (Expandir a Pesquisa)
nucl walter » noll walter (Expandir a Pesquisa), noel walter (Expandir a Pesquisa), buhl walter (Expandir a Pesquisa)
carlos nada » carlos nadaf (Expandir a Pesquisa), carlos nava (Expandir a Pesquisa), carlos nara (Expandir a Pesquisa)
comeau con » comeau ann (Expandir a Pesquisa), comeau c (Expandir a Pesquisa), comeau n (Expandir a Pesquisa)
5 methods » 5 methoxy (Expandir a Pesquisa)
con net » con nee (Expandir a Pesquisa), non net (Expandir a Pesquisa), upon net (Expandir a Pesquisa)
3 nucl » 3 null (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 comeau con net ) or ((( 5 methods compared series ngoc ) or ( 3 nucl walter carlos nada ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j l comeau con net ) OR ((( 5 methods compared series ngoc ) OR ( 3 nucl walter carlos nada )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j l comeau con net ) or ((( 5 methods compared series ngoc ) or ( 3 nucl walter carlos nada ))))*.