Talvez deva tentar algumas variações de ortografia:
computer case » computer based (Expandir a Pesquisa), computer code (Expandir a Pesquisa), computer can (Expandir a Pesquisa)
l computer » il computer (Expandir a Pesquisa), al computer (Expandir a Pesquisa), dal computer (Expandir a Pesquisa)
compas can » compass can (Expandir a Pesquisa), company can (Expandir a Pesquisa), compas dans (Expandir a Pesquisa)
dna clamp » a clamp (Expandir a Pesquisa)
a compas » a compass (Expandir a Pesquisa), al compas (Expandir a Pesquisa), _ compas (Expandir a Pesquisa)
can near » can never (Expandir a Pesquisa), can new (Expandir a Pesquisa)
case now » cases now (Expandir a Pesquisa), case non (Expandir a Pesquisa), case new (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)
j dna » _ dna (Expandir a Pesquisa), a dna (Expandir a Pesquisa), 1 dna (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": "(((( j a compas can near ) OR ( j dna clamp a newts ))) OR ( j l computer case now ))~".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j a compas can near ) OR ( j dna clamp a newts ))) OR ( j l computer case now ))*.