Talvez deva tentar algumas variações de ortografia:
currently survey » current survey (Expandir a Pesquisa), current surveys (Expandir a Pesquisa), currently studied (Expandir a Pesquisa)
survey caused » surgery caused (Expandir a Pesquisa), survey based (Expandir a Pesquisa), survey used (Expandir a Pesquisa)
j currently » _ currently (Expandir a Pesquisa), a currently (Expandir a Pesquisa), i currently (Expandir a Pesquisa)
caused due » caused acute (Expandir a Pesquisa)
cena nerve » renal nerve (Expandir a Pesquisa), beta nerve (Expandir a Pesquisa), central nerve (Expandir a Pesquisa)
bent nerve » absent nerve (Expandir a Pesquisa), mental nerve (Expandir a Pesquisa), dental nerve (Expandir a Pesquisa)
nerve cat » nerve can (Expandir a Pesquisa), nerve ct (Expandir a Pesquisa), nerve cut (Expandir a Pesquisa)
case dis » case disc (Expandir a Pesquisa), case did (Expandir a Pesquisa), case di (Expandir a Pesquisa)
j bent » j benet (Expandir a Pesquisa), j bento (Expandir a Pesquisa), j bena (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: (((( j currently survey caused due ) OR ( na cena nerve cat due ))) OR ( j bent nerve case dis ))~.
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j currently survey caused due ) or ( na cena nerve cat due ))) or ( j bent nerve case dis ))*.