Talvez deva tentar algumas variações de ortografia:
survey system » surgery system (Expandir a Pesquisa), prey system (Expandir a Pesquisa), grey system (Expandir a Pesquisa)
nerves have » nervosa have (Expandir a Pesquisa), nerves fate (Expandir a Pesquisa), nerves has (Expandir a Pesquisa)
cat nerves » rat nerve (Expandir a Pesquisa)
system dis » system dias (Expandir a Pesquisa), system dcs (Expandir a Pesquisa), system di (Expandir a Pesquisa)
mehta wave » mehta nave (Expandir a Pesquisa), mehta wa (Expandir a Pesquisa), mehta naveen (Expandir a Pesquisa)
have diet » have died (Expandir a Pesquisa), have det (Expandir a Pesquisa), have direct (Expandir a Pesquisa)
wave case » cave case (Expandir a Pesquisa), wave caused (Expandir a Pesquisa), wave based (Expandir a Pesquisa)
j mehta » a mehta (Expandir a Pesquisa), _ mehta (Expandir a Pesquisa), k mehta (Expandir a Pesquisa)
case di » case dti (Expandir a Pesquisa), case d (Expandir a Pesquisa), case de (Expandir a Pesquisa)
ii cat » ii can (Expandir a Pesquisa), ii ca2 (Expandir a Pesquisa), ii ca3 (Expandir a Pesquisa)

You can also try:

• Europeana
• Digital Public Library of America
• CORE

Pode obter mais resultados ajustando a pesquisa.

• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( ii cat nerves have diet ) OR ( i current survey system dis ))) OR ( j mehta wave case di ))~.
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( ii cat nerves have diet ) or ( i current survey system dis ))) or ( j mehta wave case di ))*.