Perhaps you should try some spelling variations:
bent nervous » agent nervous (Expand Search), get nervous (Expand Search), rodent nervous (Expand Search)
crespo nerve » crest nerve (Expand Search), crespo hervas (Expand Search), crespo servan (Expand Search)
treat nerve » rat nerve (Expand Search), treat service (Expand Search), direct nerve (Expand Search)
system dis » system dias (Expand Search), system dcs (Expand Search), system dds (Expand Search)
nerve cat » nerve can (Expand Search), nerve ct (Expand Search), nerve cut (Expand Search)
j crespo » g crespo (Expand Search), a crespo (Expand Search), _ crespo (Expand Search)
case dis » case disc (Expand Search), case did (Expand Search), case di (Expand Search)
cat dis » cat did (Expand Search), cat diets (Expand Search), cat bias (Expand Search)
j bent » j benet (Expand Search), j bento (Expand Search), j bena (Expand Search)

You can also try:

• Europeana
• Digital Public Library of America
• CORE

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((( j crespo nerve case dis ) or ( i treat nerve cat dis ))) or ( j bent nervous system dis ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((( j crespo nerve case dis ) OR ( i treat nerve cat dis ))) OR ( j bent nervous system dis )).
• Adding a wildcard symbol may retrieve word variants: (((( j crespo nerve case dis ) or ( i treat nerve cat dis ))) or ( j bent nervous system dis ))*.