Talvez deva tentar algumas variações de ortografia:
benton service » beacon service (Expandir a Pesquisa), section service (Expandir a Pesquisa), london service (Expandir a Pesquisa)
center survey » cluster survey (Expandir a Pesquisa)
survey cause » survey caused (Expandir a Pesquisa), survey course (Expandir a Pesquisa), survey use (Expandir a Pesquisa)
spinal nerve » retinal nerve (Expandir a Pesquisa)
service case » services case (Expandir a Pesquisa), service cases (Expandir a Pesquisa), service care (Expandir a Pesquisa)
cause des » cause de (Expandir a Pesquisa), cause dna (Expandir a Pesquisa)
nerve can » nerve canal (Expandir a Pesquisa), nerve case (Expandir a Pesquisa), nerve a (Expandir a Pesquisa)
a center » a century (Expandir a Pesquisa)
i spinal » a spinal (Expandir a Pesquisa), i spiral (Expandir a Pesquisa), iii spinal (Expandir a Pesquisa)
j benton » j benito (Expandir a Pesquisa)
case dis » case disc (Expandir a Pesquisa), case di (Expandir a Pesquisa), case does (Expandir a Pesquisa)
can dcs » can tdcs (Expandir a Pesquisa), can dce (Expandir a Pesquisa), can dags (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: (((( a center survey cause des ) or ( i spinal nerve can dcs ))) or ( j benton service case dis ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( a center survey cause des ) OR ( i spinal nerve can dcs ))) OR ( j benton service case dis ))*.