Talvez deva tentar algumas variações de ortografia:
reserve system » research system (Expandir a Pesquisa), research systems (Expandir a Pesquisa)
cent reserve » debt reserve (Expandir a Pesquisa), men reserve (Expandir a Pesquisa), central reserve (Expandir a Pesquisa)
spinal nerve » retinal nerve (Expandir a Pesquisa)
bent reserve » debt reserve (Expandir a Pesquisa), men reserve (Expandir a Pesquisa), bat reserve (Expandir a Pesquisa)
system dis » system dias (Expandir a Pesquisa), system di (Expandir a Pesquisa), system das (Expandir a Pesquisa)
nerve can » merve can (Expandir a Pesquisa), nerve cat (Expandir a Pesquisa), nerve cn (Expandir a Pesquisa)
i spinal » _ spinal (Expandir a Pesquisa), a spinal (Expandir a Pesquisa), i spiral (Expandir a Pesquisa)
can dcs » can tdcs (Expandir a Pesquisa), can dce (Expandir a Pesquisa), can dags (Expandir a Pesquisa)
j cent » a cent (Expandir a Pesquisa), i cent (Expandir a Pesquisa), j center (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 cent reserve system dis ) OR ( i spinal nerve can dcs ))) OR ( j bent reserve system dis ))~.
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j cent reserve system dis ) or ( i spinal nerve can dcs ))) or ( j bent reserve system dis ))*.