Talvez deva tentar algumas variações de ortografia:
services robots » service robots (Expandir a Pesquisa), service robot (Expandir a Pesquisa), service robotics (Expandir a Pesquisa)
tenth service » tent service (Expandir a Pesquisa), heath service (Expandir a Pesquisa), month service (Expandir a Pesquisa)
service case » services case (Expandir a Pesquisa), service cases (Expandir a Pesquisa), service care (Expandir a Pesquisa)
ray services » day services (Expandir a Pesquisa), assay services (Expandir a Pesquisa), library services (Expandir a Pesquisa)
robots rs » robots risk (Expandir a Pesquisa), robots _ (Expandir a Pesquisa), robots a (Expandir a Pesquisa)
case dis » case disc (Expandir a Pesquisa), case di (Expandir a Pesquisa), case does (Expandir a Pesquisa)
j tenth » _ tenth (Expandir a Pesquisa), a tenth (Expandir a Pesquisa), 95 tenth (Expandir a Pesquisa)
j ray » x ray (Expandir a Pesquisa), _ ray (Expandir a Pesquisa), w ray (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 tenth service case dis ) or ( j ray services robots rs ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j tenth service case dis ) OR ( j ray services robots rs ))*.