Talvez deva tentar algumas variações de ortografia:
elderly comparison » elderly compared (Expandir a Pesquisa)
comparison less » comparison les (Expandir a Pesquisa), comparison lessons (Expandir a Pesquisa), comparison bases (Expandir a Pesquisa)
nacl compared » acl compared (Expandir a Pesquisa), al compared (Expandir a Pesquisa), small compared (Expandir a Pesquisa)
apl computer » maple computer (Expandir a Pesquisa), call computer (Expandir a Pesquisa), dal computer (Expandir a Pesquisa)
compared can » compared case (Expandir a Pesquisa), compared a (Expandir a Pesquisa), compared law (Expandir a Pesquisa)
2 elderly » _ elderly (Expandir a Pesquisa), a elderly (Expandir a Pesquisa)
less now » less new (Expandir a Pesquisa), less non (Expandir a Pesquisa), less known (Expandir a Pesquisa)
can non » dan non (Expandir a Pesquisa), than non (Expandir a Pesquisa)
j nacl » 3 nacl (Expandir a Pesquisa), a nacl (Expandir a Pesquisa), 2 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: (( _ apl computer _ new ) or ((( j nacl compared can non ) or ( 2 elderly comparison less now ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( _ apl computer _ new ) OR ((( j nacl compared can non ) OR ( 2 elderly comparison less now )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( _ apl computer _ new ) or ((( j nacl compared can non ) or ( 2 elderly comparison less now ))))*.