Talvez deva tentar algumas variações de ortografia:
reserve system » research system (Expandir a Pesquisa), nerve system (Expandir a Pesquisa), research systems (Expandir a Pesquisa)
mental reserve » central reserve (Expandir a Pesquisa), renal reserve (Expandir a Pesquisa), metal reserves (Expandir a Pesquisa)
center merge » center large (Expandir a Pesquisa), center more (Expandir a Pesquisa), center mega (Expandir a Pesquisa)
censo nerve » sensory nerve (Expandir a Pesquisa)
nerve disc » nerve disk (Expandir a Pesquisa)
disc disco » disco disco (Expandir a Pesquisa), disc1 disc2 (Expandir a Pesquisa), disc disk (Expandir a Pesquisa)
merge can » mergers can (Expandir a Pesquisa), mergel san (Expandir a Pesquisa), large can (Expandir a Pesquisa)
system di » system de (Expandir a Pesquisa), system d (Expandir a Pesquisa), system dias (Expandir a Pesquisa)
j center » j centner (Expandir a Pesquisa), j centeno (Expandir a Pesquisa), j cestero (Expandir a Pesquisa)
j mental » j mengual (Expandir a Pesquisa), j mena (Expandir a Pesquisa), j mehta (Expandir a Pesquisa)
can dcs » can tdcs (Expandir a Pesquisa), can dce (Expandir a Pesquisa), can dags (Expandir a Pesquisa)
i censo » o censo (Expandir a Pesquisa), _ censo (Expandir a Pesquisa), do censo (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 center merge can dcs ) or ( i censo nerve disc disco ))) or ( j mental reserve system di ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( j center merge can dcs ) OR ( i censo nerve disc disco ))) OR ( j mental reserve system di )).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j center merge can dcs ) or ( i censo nerve disc disco ))) or ( j mental reserve system di ))*.