Talvez deva tentar algumas variações de ortografia:
reserve system » research system (Expandir a Pesquisa), nerve system (Expandir a Pesquisa), research systems (Expandir a Pesquisa)
renal reserve » adrenal reserve (Expandir a Pesquisa), legal reserve (Expandir a Pesquisa), adrenal reserves (Expandir a Pesquisa)
spinal nerve » retinal nerve (Expandir a Pesquisa)
system des » system der (Expandir a Pesquisa), system de (Expandir a Pesquisa), system design (Expandir a Pesquisa)
bent nerve » absent nerve (Expandir a Pesquisa), mental nerve (Expandir a Pesquisa), dental nerve (Expandir a Pesquisa)
nerve can » nerve canal (Expandir a Pesquisa), nerve case (Expandir a Pesquisa), nerve a (Expandir a Pesquisa)
can diet » can direct (Expandir a Pesquisa)
j spinal » j spina (Expandir a Pesquisa), j spinar (Expandir a Pesquisa), j spittal (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.

• Performing a fuzzy search may retrieve terms with similar spellings: (( a renal reserve system des ) or ((( j bent nerve can diet ) or ( j spinal nerve can diet ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( a renal reserve system des ) OR ((( j bent nerve can diet ) OR ( j spinal nerve can diet )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( a renal reserve system des ) or ((( j bent nerve can diet ) or ( j spinal nerve can diet ))))*.