Talvez deva tentar algumas variações de ortografia:
commutes cases » commute based (Expandir a Pesquisa), communities causes (Expandir a Pesquisa), communities cares (Expandir a Pesquisa)
daily commutes » daily commute (Expandir a Pesquisa), daily computed (Expandir a Pesquisa), daily computer (Expandir a Pesquisa)
al comparison » trial comparison (Expandir a Pesquisa), global comparison (Expandir a Pesquisa)
comparison a » comparison _ (Expandir a Pesquisa), comparison among (Expandir a Pesquisa), comparison based (Expandir a Pesquisa)
cases non » causes non (Expandir a Pesquisa), case non (Expandir a Pesquisa), biases non (Expandir a Pesquisa)
a clamp » _ clamp (Expandir a Pesquisa), a claims (Expandir a Pesquisa)
clamp a » clamp _ (Expandir a Pesquisa), clamp j (Expandir a Pesquisa)
c daily » _ daily (Expandir a Pesquisa), a daily (Expandir a Pesquisa), 2 daily (Expandir a Pesquisa)
a newt » _ newt (Expandir a Pesquisa), a news (Expandir a Pesquisa), a neat (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": "(((( _ al comparison a near ) OR ( j a clamp a newt ))) OR ( c daily commutes cases non ))~".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( _ al comparison a near ) OR ( j a clamp a newt ))) OR ( c daily commutes cases non ))*.