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 tran » complex trans (Expandir a Pesquisa), complex than (Expandir a Pesquisa), complex trait (Expandir a Pesquisa)
carlos noel » carlos joel (Expandir a Pesquisa), carlos noe (Expandir a Pesquisa), carlos yoel (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)
tran ngo » tran ngoc (Expandir a Pesquisa), tran ngon (Expandir a Pesquisa), trang ngo (Expandir a Pesquisa)
nacl can » nacl nano (Expandir a Pesquisa), nacl en (Expandir a Pesquisa), nacl a (Expandir a Pesquisa)
3 nacl » _ nacl (Expandir a Pesquisa), m 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 complex tran ngo ) or ( 3 nacl can carlos noel ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j _ combs colin new ) OR ((( 5 methods complex tran ngo ) OR ( 3 nacl can carlos noel )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j _ combs colin new ) or ((( 5 methods complex tran ngo ) or ( 3 nacl can carlos noel ))))*.