Talvez deva tentar algumas variações de ortografia:
method couples » method coupled (Expandir a Pesquisa), methods coupled (Expandir a Pesquisa), method complex (Expandir a Pesquisa)
couples within » coupled within (Expandir a Pesquisa), courses within (Expandir a Pesquisa), complexes within (Expandir a Pesquisa)
carlos lazaro » carlos salazar (Expandir a Pesquisa)
within ngo » within neo (Expandir a Pesquisa), within nano (Expandir a Pesquisa), within nno1 (Expandir a Pesquisa)
sao carlos » joao carlos (Expandir a Pesquisa)
comps con » compost con (Expandir a Pesquisa), comps los (Expandir a Pesquisa)
15 method » 135 method (Expandir a Pesquisa), 15 methods (Expandir a Pesquisa), 05 method (Expandir a Pesquisa)
7.5 nacl » 3.5 nacl (Expandir a Pesquisa), 0.9 nacl (Expandir a Pesquisa)
nacl sao » nacl salt (Expandir a Pesquisa), nacl nano (Expandir a Pesquisa), nacl naoh (Expandir a Pesquisa)
l comps » m comps (Expandir a Pesquisa)
con net » con nee (Expandir a Pesquisa), non net (Expandir a Pesquisa), upon 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 l comps con net ) or ((( 15 method couples within ngo ) or ( 7.5 nacl sao carlos lazaro ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j l comps con net ) OR ((( 15 method couples within ngo ) OR ( 7.5 nacl sao carlos lazaro )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j l comps con net ) or ((( 15 method couples within ngo ) or ( 7.5 nacl sao carlos lazaro ))))*.