Talvez deva tentar algumas variações de ortografia:
method complex » methods complex (Expandir a Pesquisa), method coupled (Expandir a Pesquisa), method complexity (Expandir a Pesquisa)
species ngoc » species non (Expandir a Pesquisa), species nor (Expandir a Pesquisa), species nrc (Expandir a Pesquisa)
najar carlos » nejar carlos (Expandir a Pesquisa), nassar carlos (Expandir a Pesquisa), naja carlo (Expandir a Pesquisa)
carlos nada » carlos nadaf (Expandir a Pesquisa), carlos nava (Expandir a Pesquisa), carlos nara (Expandir a Pesquisa)
comas upon » cones upon (Expandir a Pesquisa), domains upon (Expandir a Pesquisa), corneas upon (Expandir a Pesquisa)
nacl najar » al najar (Expandir a Pesquisa), nacl nabr (Expandir a Pesquisa)
15 method » 15 methyl (Expandir a Pesquisa), 5 methods (Expandir a Pesquisa)
upon net » upon neo (Expandir a Pesquisa), upon new (Expandir a Pesquisa), upon near (Expandir a Pesquisa)
l comas » l comps (Expandir a Pesquisa), l comeau (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 l comas upon net ) or ((( 15 method complex species ngoc ) or ( 3 nacl najar carlos nada ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j l comas upon net ) OR ((( 15 method complex species ngoc ) OR ( 3 nacl najar carlos nada )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j l comas upon net ) or ((( 15 method complex species ngoc ) or ( 3 nacl najar carlos nada ))))*.