Talvez deva tentar algumas variações de ortografia:
mental reserve » central reserve (Expandir a Pesquisa), renal reserve (Expandir a Pesquisa), metal reserves (Expandir a Pesquisa)
reserve system » research system (Expandir a Pesquisa), nerve system (Expandir a Pesquisa), research systems (Expandir a Pesquisa)
mental nerve » ventral nerve (Expandir a Pesquisa), renal nerve (Expandir a Pesquisa)
bent merve » bent nerve (Expandir a Pesquisa)
system des » system der (Expandir a Pesquisa), system de (Expandir a Pesquisa), system design (Expandir a Pesquisa)
merve aan » merve can (Expandir a Pesquisa), merve yaman (Expandir a Pesquisa), merve a (Expandir a Pesquisa)
i mental » vi mental (Expandir a Pesquisa), ii mental (Expandir a Pesquisa), i metal (Expandir a Pesquisa)
j mental » j mengual (Expandir a Pesquisa), j mehta (Expandir a Pesquisa), j mena (Expandir a Pesquisa)
aan die » van die (Expandir a Pesquisa)
nerve c » nerve cn (Expandir a Pesquisa), nerve _ (Expandir a Pesquisa), nerve a (Expandir a Pesquisa)
j bent » j benet (Expandir a Pesquisa), j bento (Expandir a Pesquisa), j bena (Expandir a Pesquisa)
c dis » c dias (Expandir a Pesquisa), c disc (Expandir a Pesquisa), c dos (Expandir a Pesquisa)

You can also try:

• Europeana
• Digital Public Library of America
• CORE

Pode obter mais resultados ajustando a pesquisa.

• "As palabras AND, OR e NOT podem gerar pesquisas incorrectas; tente utilizar aspas": "(((( j bent merve aan die ) OR ( i mental nerve c dis ))) OR ( j mental reserve system des ))~".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j bent merve aan die ) OR ( i mental nerve c dis ))) OR ( j mental reserve system des ))*.