Talvez deva tentar algumas variações de ortografia:
levell compared » levels compared (Expandir a Pesquisa), level compared (Expandir a Pesquisa), recall compared (Expandir a Pesquisa)
computer based » computer aided (Expandir a Pesquisa)
compared law » compared a (Expandir a Pesquisa), compared _ (Expandir a Pesquisa), company law (Expandir a Pesquisa)
l computer » il computer (Expandir a Pesquisa), al computer (Expandir a Pesquisa), dal computer (Expandir a Pesquisa)
dna clamp » a clamp (Expandir a Pesquisa)
based now » based snow (Expandir a Pesquisa), based non (Expandir a Pesquisa), based no2 (Expandir a Pesquisa)
j levell » j levels (Expandir a Pesquisa), j leveau (Expandir a Pesquisa), j lever (Expandir a Pesquisa)
law near » gaw near (Expandir a Pesquisa), low near (Expandir a Pesquisa), flow near (Expandir a Pesquisa)
1 dna » _ dna (Expandir a Pesquisa), a dna (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 levell compared law near ) or ( 1 dna clamp _ newts ))) or ( j l computer based now ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( j levell compared law near ) OR ( 1 dna clamp _ newts ))) OR ( j l computer based now )).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j levell compared law near ) or ( 1 dna clamp _ newts ))) or ( j l computer based now ))*.