Talvez deva tentar algumas variações de ortografia:
computer age » computer image (Expandir a Pesquisa), computer a (Expandir a Pesquisa), computer aided (Expandir a Pesquisa)
al computer » dal computer (Expandir a Pesquisa), apl computer (Expandir a Pesquisa), il computer (Expandir a Pesquisa)
clamp com » clamp cum (Expandir a Pesquisa), clamp from (Expandir a Pesquisa), clamp croc (Expandir a Pesquisa)
pcr newts » pcr new (Expandir a Pesquisa), pcr next (Expandir a Pesquisa)
com near » comb near (Expandir a Pesquisa), from near (Expandir a Pesquisa), com negro (Expandir a Pesquisa)
amp pcr » ap pcr (Expandir a Pesquisa)
age now » age new (Expandir a Pesquisa), age non (Expandir a Pesquisa), care now (Expandir a Pesquisa)
j dna » _ dna (Expandir a Pesquisa), a dna (Expandir a Pesquisa), b dna (Expandir a Pesquisa)
1 dna » _ dna (Expandir a Pesquisa), a dna (Expandir a Pesquisa)
a amp » _ amp (Expandir a Pesquisa), 5 amp (Expandir a Pesquisa), r amp (Expandir a Pesquisa)
j al » j l (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: (((( ((j dna) OR (1 dna)) clamp com near ) or ( j a amp pcr newts ))) or ( j al computer age now ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( ((j dna) OR (1 dna)) clamp com near ) OR ( j a amp pcr newts ))) OR ( j al computer age now )).
• "As palabras AND, OR e NOT podem gerar pesquisas incorrectas; tente utilizar aspas": "(((( ((j dna) OR (1 dna)) clamp com near ) or ( j a amp pcr newts ))) or ( j al computer age now ))".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( ((j dna) OR (1 dna)) clamp com near ) or ( j a amp pcr newts ))) or ( j al computer age now ))*.