Talvez deva tentar algumas variações de ortografia:
level comparison » model comparison (Expandir a Pesquisa), global comparison (Expandir a Pesquisa), al comparison (Expandir a Pesquisa)
comparison low » comparison long (Expandir a Pesquisa), comparison do (Expandir a Pesquisa), comparison bot (Expandir a Pesquisa)
compiled laws » compared law (Expandir a Pesquisa), compiled data (Expandir a Pesquisa), compiled bafa (Expandir a Pesquisa)
computer can » computers can (Expandir a Pesquisa), computer case (Expandir a Pesquisa), computer a (Expandir a Pesquisa)
day compiled » data compiled (Expandir a Pesquisa), day combined (Expandir a Pesquisa), a compiled (Expandir a Pesquisa)
laws how » laws h (Expandir a Pesquisa), laws do (Expandir a Pesquisa)
can non » dan non (Expandir a Pesquisa), than non (Expandir a Pesquisa)
j level » j levell (Expandir a Pesquisa), j levels (Expandir a Pesquisa), j levelt (Expandir a Pesquisa)
i day » _ day (Expandir a Pesquisa), a day (Expandir a Pesquisa), 7 day (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: (( i _ computer can non ) or ((( j level comparison low neg ) or ( i day compiled laws how ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( i _ computer can non ) OR ((( j level comparison low neg ) OR ( i day compiled laws how )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( i _ computer can non ) or ((( j level comparison low neg ) or ( i day compiled laws how ))))*.