Talvez deva tentar algumas variações de ortografia:
computer cases » computer case (Expandir a Pesquisa), computer classes (Expandir a Pesquisa), computer caries (Expandir a Pesquisa)
boys compared » boy compared (Expandir a Pesquisa), bolus compared (Expandir a Pesquisa), bouts compared (Expandir a Pesquisa)
compared can » compared case (Expandir a Pesquisa), compared a (Expandir a Pesquisa), compared law (Expandir a Pesquisa)
dna clamp » a clamp (Expandir a Pesquisa)
clamp can » clamp a (Expandir a Pesquisa), clamp ar (Expandir a Pesquisa), clamp cum (Expandir a Pesquisa)
can newts » can new (Expandir a Pesquisa), can newly (Expandir a Pesquisa)
can near » can never (Expandir a Pesquisa), can new (Expandir a Pesquisa)
j boys » j boyd (Expandir a Pesquisa), j bols (Expandir a Pesquisa), j bois (Expandir a Pesquisa)
_ vhdl » _ vhl (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: (((( j boys compared can near ) OR ( _ dna clamp can newts ))) OR ( _ vhdl computer cases new ))~.
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j boys compared can near ) or ( _ dna clamp can newts ))) or ( _ vhdl computer cases new ))*.