Talvez deva tentar algumas variações de ortografia:
computer classes » computer clusters (Expandir a Pesquisa), computer cluster (Expandir a Pesquisa), computer case (Expandir a Pesquisa)
simple computer » apple computer (Expandir a Pesquisa)
egfr compared » agar compared (Expandir a Pesquisa), ehr compared (Expandir a Pesquisa), er compared (Expandir a Pesquisa)
classes now » classes new (Expandir a Pesquisa), classes nos (Expandir a Pesquisa), classes na (Expandir a Pesquisa)
compared a » compared _ (Expandir a Pesquisa)
can newts » can new (Expandir a Pesquisa), can net (Expandir a Pesquisa), can newly (Expandir a Pesquisa)
camp can » clamp can (Expandir a Pesquisa), camp ca (Expandir a Pesquisa), amp can (Expandir a Pesquisa)
j simple » a simple (Expandir a Pesquisa), _ simple (Expandir a Pesquisa), 1 simple (Expandir a Pesquisa)
ac camp » a camp (Expandir a Pesquisa), c camp (Expandir a Pesquisa), amp camp (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: (( _ ac camp can newts ) or ((( j simple computer classes now ) or ( _ egfr compared a new ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( _ ac camp can newts ) OR ((( j simple computer classes now ) OR ( _ egfr compared a new )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( _ ac camp can newts ) or ((( j simple computer classes now ) or ( _ egfr compared a new ))))*.