Talvez deva tentar algumas variações de ortografia:
swards compared » swabs compared (Expandir a Pesquisa), ward compared (Expandir a Pesquisa), aids compared (Expandir a Pesquisa)
canada caused » canada based (Expandir a Pesquisa), canada case (Expandir a Pesquisa), canada changed (Expandir a Pesquisa)
rays compared » days compared (Expandir a Pesquisa), boys compared (Expandir a Pesquisa), assays compared (Expandir a Pesquisa)
caused fetal » causes fetal (Expandir a Pesquisa), caused fatal (Expandir a Pesquisa), cause fetal (Expandir a Pesquisa)
compared a » compared _ (Expandir a Pesquisa), compare a (Expandir a Pesquisa), compare _ (Expandir a Pesquisa)
a norreys » a norris (Expandir a Pesquisa), a nortes (Expandir a Pesquisa)
d canada » _ canada (Expandir a Pesquisa), a canada (Expandir a Pesquisa), f canada (Expandir a Pesquisa)
_ swards » _ swarms (Expandir a Pesquisa), _ swords (Expandir a Pesquisa), _ sward (Expandir a Pesquisa)
j rays » j raes (Expandir a Pesquisa)
a non » _ non (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 d canada caused fetal ) or ((( j rays compared a norreys ) or ( _ swards compared a non ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j d canada caused fetal ) OR ((( j rays compared a norreys ) OR ( _ swards compared a non )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j d canada caused fetal ) or ((( j rays compared a norreys ) or ( _ swards compared a non ))))*.