Talvez deva tentar algumas variações de ortografia:
reserve system » research system (Expandir a Pesquisa), nerve system (Expandir a Pesquisa), research systems (Expandir a Pesquisa)
ventral nerve » femoral nerve (Expandir a Pesquisa)
letter nurse » better nurse (Expandir a Pesquisa), better nurses (Expandir a Pesquisa), letter nursing (Expandir a Pesquisa)
nurse cnat » nurse can't (Expandir a Pesquisa), nurse can (Expandir a Pesquisa), nurse ca (Expandir a Pesquisa)
i ventral » _ ventral (Expandir a Pesquisa), a ventral (Expandir a Pesquisa), 2 ventral (Expandir a Pesquisa)
system di » system de (Expandir a Pesquisa), system d (Expandir a Pesquisa), system dias (Expandir a Pesquisa)
j letter » bj letter (Expandir a Pesquisa), cj letter (Expandir a Pesquisa), j letters (Expandir a Pesquisa)
cnat dis » cent dis (Expandir a Pesquisa)
nerve cn » nerve can (Expandir a Pesquisa), nerve c (Expandir a Pesquisa), nerve co (Expandir a Pesquisa)
cn disc » can disc (Expandir a Pesquisa), c disc (Expandir a Pesquisa), car disc (Expandir a Pesquisa)
j mehta » a mehta (Expandir a Pesquisa), _ mehta (Expandir a Pesquisa), k mehta (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 letter nurse cnat dis ) OR ( i ventral nerve cn disc ))) OR ( j mehta reserve system di ))~.
• "As palabras AND, OR e NOT podem gerar pesquisas incorrectas; tente utilizar aspas": "(((( j letter nurse cnat dis ) OR ( i ventral nerve cn disc ))) OR ( j mehta reserve system di ))".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j letter nurse cnat dis ) OR ( i ventral nerve cn disc ))) OR ( j mehta reserve system di ))*.