Talvez deva tentar algumas variações de ortografia:
elderly comparison » elderly compared (Expandir a Pesquisa)
comparison a » comparison _ (Expandir a Pesquisa), comparison among (Expandir a Pesquisa), comparison based (Expandir a Pesquisa)
nataly comp » natalia comp (Expandir a Pesquisa), nataly costa (Expandir a Pesquisa), nataly gomes (Expandir a Pesquisa)
comps can » comps con (Expandir a Pesquisa), comes can (Expandir a Pesquisa), comp can (Expandir a Pesquisa)
can newts » can new (Expandir a Pesquisa), can net (Expandir a Pesquisa), can newly (Expandir a Pesquisa)
al comps » al compas (Expandir a Pesquisa), l comps (Expandir a Pesquisa), al comp (Expandir a Pesquisa)
3 nataly » 3 nasal (Expandir a Pesquisa)
comp dan » comp can (Expandir a Pesquisa), comp da (Expandir a Pesquisa), comp das (Expandir a Pesquisa)
dan non » than non (Expandir a Pesquisa), dan ning (Expandir a Pesquisa)
a now » a new (Expandir a Pesquisa), a non (Expandir a Pesquisa), _ now (Expandir a Pesquisa)
j al » j a (Expandir a Pesquisa), j l (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 al comps can newts ) or ((( _ elderly comparison a now ) or ( 3 nataly comp dan non ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j al comps can newts ) OR ((( _ elderly comparison a now ) OR ( 3 nataly comp dan non )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j al comps can newts ) or ((( _ elderly comparison a now ) or ( 3 nataly comp dan non ))))*.