Talvez deva tentar algumas variações de ortografia:
current surveys » current survey (Expandir a Pesquisa)
surveys system » survey system (Expandir a Pesquisa), survey systems (Expandir a Pesquisa), surveying system (Expandir a Pesquisa)
belval nerve » renal nerve (Expandir a Pesquisa), mental nerve (Expandir a Pesquisa), dental nerve (Expandir a Pesquisa)
nerve seath » nerve sheath (Expandir a Pesquisa), nerve sheaths (Expandir a Pesquisa), nerve path (Expandir a Pesquisa)
cent nerve » bent nerve (Expandir a Pesquisa), recent nerve (Expandir a Pesquisa), crest nerve (Expandir a Pesquisa)
seath diet » health diet (Expandir a Pesquisa), dearth diet (Expandir a Pesquisa), death diets (Expandir a Pesquisa)
system dis » system dias (Expandir a Pesquisa), system dcs (Expandir a Pesquisa), system di (Expandir a Pesquisa)
j belval » j bell (Expandir a Pesquisa), j bela (Expandir a Pesquisa)
i cent » i cento (Expandir a Pesquisa), ai cent (Expandir a Pesquisa), ii cent (Expandir a Pesquisa)
case 4 » case _ (Expandir a Pesquisa), case 1 (Expandir a Pesquisa), case 2 (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: (((( i cent nerve seath diet ) OR ( i current surveys system dis ))) OR ( j belval nerve case 4 ))~.
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( i cent nerve seath diet ) or ( i current surveys system dis ))) or ( j belval nerve case 4 ))*.