Talvez deva tentar algumas variações de ortografia:
analog complex » analog computer (Expandir a Pesquisa), analyzing complex (Expandir a Pesquisa), analog computers (Expandir a Pesquisa)
complex tris » complex tric (Expandir a Pesquisa), complex trs (Expandir a Pesquisa), complex traits (Expandir a Pesquisa)
knopf carlos » prof carlos (Expandir a Pesquisa)
carlos lara » carlos lima (Expandir a Pesquisa), carlos lacerda (Expandir a Pesquisa), carlos lazaro (Expandir a Pesquisa)
nacl knopf » nacl kno (Expandir a Pesquisa)
tris ngoc » trinh ngoc (Expandir a Pesquisa), trieu ngoc (Expandir a Pesquisa), tran ngoc (Expandir a Pesquisa)
_ analog » _ anal (Expandir a Pesquisa)
3.5 nacl » 0.9 nacl (Expandir a Pesquisa)
l combs » e combs (Expandir a Pesquisa), _ combs (Expandir a Pesquisa), l comps (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 combs _ new ) or ((( _ analog complex tris ngoc ) or ( 3.5 nacl knopf carlos lara ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j l combs _ new ) OR ((( _ analog complex tris ngoc ) OR ( 3.5 nacl knopf carlos lara )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j l combs _ new ) or ((( _ analog complex tris ngoc ) or ( 3.5 nacl knopf carlos lara ))))*.