Talvez deva tentar algumas variações de ortografia:
elderly comparisons » elderly comparison (Expandir a Pesquisa), elderly comparing (Expandir a Pesquisa), early comparisons (Expandir a Pesquisa)
comparisons can » comparisons a (Expandir a Pesquisa), comparisons lead (Expandir a Pesquisa), comparisons when (Expandir a Pesquisa)
acl compared » nacl compared (Expandir a Pesquisa), al compared (Expandir a Pesquisa), gel compared (Expandir a Pesquisa)
compared can » compared case (Expandir a Pesquisa), compared a (Expandir a Pesquisa), compared law (Expandir a Pesquisa)
j elderly » _ elderly (Expandir a Pesquisa), a elderly (Expandir a Pesquisa), 2 elderly (Expandir a Pesquisa)
can ngoc » van ngoc (Expandir a Pesquisa), tran ngoc (Expandir a Pesquisa), phan ngoc (Expandir a Pesquisa)
can now » can non (Expandir a Pesquisa), can new (Expandir a Pesquisa)
j acl » _ acl (Expandir a Pesquisa), j cl (Expandir a Pesquisa), j adl (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 acl compared can now ) or ( j elderly comparisons can ngoc ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j acl compared can now ) OR ( j elderly comparisons can ngoc ))*.