Talvez deva tentar algumas variações de ortografia:
nacl complex » nac56 complex (Expandir a Pesquisa), al complex (Expandir a Pesquisa), all complex (Expandir a Pesquisa)
complex dan » complex dance (Expandir a Pesquisa), complex data (Expandir a Pesquisa), complex dapc (Expandir a Pesquisa)
romer dan » romer a (Expandir a Pesquisa), romero da (Expandir a Pesquisa), romer daniel (Expandir a Pesquisa)
dan near » can near (Expandir a Pesquisa), dan neal (Expandir a Pesquisa), man near (Expandir a Pesquisa)
natl bed » nail bed (Expandir a Pesquisa), lal bed (Expandir a Pesquisa)
3.5 nacl » 0.9 nacl (Expandir a Pesquisa)
l romer » l romero (Expandir a Pesquisa), l romera (Expandir a Pesquisa), l roger (Expandir a Pesquisa)
dan non » than non (Expandir a Pesquisa), dan ning (Expandir a Pesquisa)
_ natl » _ natal (Expandir a Pesquisa), _ nat'l (Expandir a Pesquisa), _ nato (Expandir a Pesquisa)
bed a » fed a (Expandir a Pesquisa), bed _ (Expandir a Pesquisa), ted a (Expandir a Pesquisa)

You can also try:

• Europeana
• Digital Public Library of America
• CORE

Pode obter mais resultados ajustando a pesquisa.

• "As palabras AND, OR e NOT podem gerar pesquisas incorrectas; tente utilizar aspas": "(( j l romer dan near ) OR ((( _ natl bed a new ) OR ( 3.5 nacl complex dan non ))))~".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j l romer dan near ) OR ((( _ natl bed a new ) OR ( 3.5 nacl complex dan non ))))*.