Talvez deva tentar algumas variações de ortografia:
methods complex » methods coupled (Expandir a Pesquisa), methods compared (Expandir a Pesquisa), methods computer (Expandir a Pesquisa)
complex tree » complex three (Expandir a Pesquisa), complex trex (Expandir a Pesquisa), complex trace (Expandir a Pesquisa)
carlos nava » carlos navarro (Expandir a Pesquisa), carlos eslava (Expandir a Pesquisa), carlos zavala (Expandir a Pesquisa)
nacl nunes » a.l nunes (Expandir a Pesquisa), nacl induces (Expandir a Pesquisa)
combs non » combs john (Expandir a Pesquisa), combat non (Expandir a Pesquisa), combs jan (Expandir a Pesquisa)
5 methods » 5 methoxy (Expandir a Pesquisa)
tree ngoc » trieu ngoc (Expandir a Pesquisa), tran ngoc (Expandir a Pesquisa), tien ngoc (Expandir a Pesquisa)
m combs » m coombs (Expandir a Pesquisa), e combs (Expandir a Pesquisa), _ combs (Expandir a Pesquisa)
non net » non nest (Expandir a Pesquisa), con net (Expandir a Pesquisa), anion net (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 combs non net ) or ((( 5 methods complex tree ngoc ) or ( 0.9 nacl nunes carlos nava ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j m combs non net ) OR ((( 5 methods complex tree ngoc ) OR ( 0.9 nacl nunes carlos nava )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j m combs non net ) or ((( 5 methods complex tree ngoc ) or ( 0.9 nacl nunes carlos nava ))))*.