Talvez deva tentar algumas variações de ortografia:
costs comparing » costs compared (Expandir a Pesquisa), results comparing (Expandir a Pesquisa), adults comparing (Expandir a Pesquisa)
comparing case » comparing cancer (Expandir a Pesquisa), comparison case (Expandir a Pesquisa), compelling case (Expandir a Pesquisa)
maps computer » maple computer (Expandir a Pesquisa), jaws computer (Expandir a Pesquisa), mds computer (Expandir a Pesquisa)
computer case » computer based (Expandir a Pesquisa), computer code (Expandir a Pesquisa), computer can (Expandir a Pesquisa)
case netw » case note (Expandir a Pesquisa), case near (Expandir a Pesquisa), case need (Expandir a Pesquisa)
case new » cases new (Expandir a Pesquisa), cause new (Expandir a Pesquisa), caste new (Expandir a Pesquisa)
j costs » j costa (Expandir a Pesquisa), j coats (Expandir a Pesquisa), j coss (Expandir a Pesquisa)
e maps » e mapas (Expandir a Pesquisa), e mapes (Expandir a Pesquisa), re maps (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 costs comparing case netw ) or ( e maps computer case new ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j costs comparing case netw ) OR ( e maps computer case new )).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j costs comparing case netw ) or ( e maps computer case new ))*.