Talvez deva tentar algumas variações de ortografia:
aix computer » a computer (Expandir a Pesquisa), udx computer (Expandir a Pesquisa), tex computer (Expandir a Pesquisa)
data compare » data compared (Expandir a Pesquisa), data comparing (Expandir a Pesquisa), data computer (Expandir a Pesquisa)
computer age » computer image (Expandir a Pesquisa), computer a (Expandir a Pesquisa), computer aided (Expandir a Pesquisa)
compare can » compared can (Expandir a Pesquisa), compare care (Expandir a Pesquisa), compare cone (Expandir a Pesquisa)
can never » than never (Expandir a Pesquisa), a never (Expandir a Pesquisa), has never (Expandir a Pesquisa)
a clamp » _ clamp (Expandir a Pesquisa), c clamp (Expandir a Pesquisa), dna clamp (Expandir a Pesquisa)
clamp a » clamp _ (Expandir a Pesquisa), clamp j (Expandir a Pesquisa)
a newts » _ newts (Expandir a Pesquisa), a news (Expandir a Pesquisa), a newt (Expandir a Pesquisa)
age now » age new (Expandir a Pesquisa), care now (Expandir a Pesquisa)
j aix » _ aix (Expandir a Pesquisa), j aim (Expandir a Pesquisa), d aix (Expandir a Pesquisa)

You can also try:

• Europeana
• Digital Public Library of America
• CORE

Pode obter mais resultados ajustando a pesquisa.

• "As palabras AND, OR e NOT podem gerar pesquisas incorrectas; tente utilizar aspas": "(((( e data compare can never ) OR ( j a clamp a newts ))) OR ( j aix computer age now ))~".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( e data compare can never ) OR ( j a clamp a newts ))) OR ( j aix computer age now ))*.