Talvez deva tentar algumas variações de ortografia:
norway comparative » array comparative (Expandir a Pesquisa), germany comparative (Expandir a Pesquisa), policy comparative (Expandir a Pesquisa)
comparative ab » comparative a (Expandir a Pesquisa), comparative age (Expandir a Pesquisa), comparative anti (Expandir a Pesquisa)
ages compared » age compared (Expandir a Pesquisa), aged compared (Expandir a Pesquisa), images compared (Expandir a Pesquisa)
compared a » compared _ (Expandir a Pesquisa)
nat2 comp » nat2 com (Expandir a Pesquisa), aav2 comp (Expandir a Pesquisa)
comp can » camp can (Expandir a Pesquisa), chimp can (Expandir a Pesquisa), clamp can (Expandir a Pesquisa)
j norway » _ norway (Expandir a Pesquisa), a norway (Expandir a Pesquisa), 1 norway (Expandir a Pesquisa)
can non » dan non (Expandir a Pesquisa), than non (Expandir a Pesquisa)
ab net » vb net (Expandir a Pesquisa), tb net (Expandir a Pesquisa)
6 ages » _ ages (Expandir a Pesquisa), 4 ages (Expandir a Pesquisa), 6 aged (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: (( 2 nat2 comp can non ) or ((( j norway comparative ab net ) or ( 6 ages compared a new ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( 2 nat2 comp can non ) OR ((( j norway comparative ab net ) OR ( 6 ages compared a new )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( 2 nat2 comp can non ) or ((( j norway comparative ab net ) or ( 6 ages compared a new ))))*.