Talvez deva tentar algumas variações de ortografia:
germany comparative » array comparative (Expandir a Pesquisa), therapy comparative (Expandir a Pesquisa)
comparative low » comparative law (Expandir a Pesquisa), comparative long (Expandir a Pesquisa), comparative look (Expandir a Pesquisa)
usa germany » a germany (Expandir a Pesquisa)
rat compare » rat compared (Expandir a Pesquisa), rate compare (Expandir a Pesquisa), rats compare (Expandir a Pesquisa)
nat2 compr » nat2 com (Expandir a Pesquisa)
compr than » cpr than (Expandir a Pesquisa), complex than (Expandir a Pesquisa), company than (Expandir a Pesquisa)
compare a » compare _ (Expandir a Pesquisa)
low need » low feed (Expandir a Pesquisa), low seed (Expandir a Pesquisa), now need (Expandir a Pesquisa)
a rat » _ rat (Expandir a Pesquisa)

You can also try:

• Europeana
• Digital Public Library of America
• CORE

Pode obter mais resultados ajustando a pesquisa.

• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( 2 nat2 compr than non ) OR ((( usa germany comparative low need ) OR ( a rat compare a new ))))~.
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( 2 nat2 compr than non ) or ((( usa germany comparative low need ) or ( a rat compare a new ))))*.