Talvez deva tentar algumas variações de ortografia:
foils comparing » focus comparing (Expandir a Pesquisa), foods comparing (Expandir a Pesquisa), forms comparing (Expandir a Pesquisa)
comparing case » comparing cancer (Expandir a Pesquisa), compelling case (Expandir a Pesquisa), comparing climate (Expandir a Pesquisa)
hits comparing » diets comparing (Expandir a Pesquisa), bias comparing (Expandir a Pesquisa), ants comparing (Expandir a Pesquisa)
boy compared » body compared (Expandir a Pesquisa), boys compared (Expandir a Pesquisa), soy compared (Expandir a Pesquisa)
case new » cases new (Expandir a Pesquisa), cause new (Expandir a Pesquisa), caste new (Expandir a Pesquisa)
_ foils » _ foals (Expandir a Pesquisa), _ foil (Expandir a Pesquisa), _ fossils (Expandir a Pesquisa)
a hits » a hitt (Expandir a Pesquisa), a hito (Expandir a Pesquisa), a hiatus (Expandir a Pesquisa)
j boy » j boyd (Expandir a Pesquisa), j boys (Expandir a Pesquisa), j body (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 boy compared _ netw ) or ((( _ foils comparing case new ) or ( a hits comparing case new ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j boy compared _ netw ) OR ((( _ foils comparing case new ) OR ( a hits comparing case new )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j boy compared _ netw ) or ((( _ foils comparing case new ) or ( a hits comparing case new ))))*.