Perhaps you should try some spelling variations:
letters nerve » letter nerve (Expand Search), letters never (Expand Search), letters nurse (Expand Search)
benign nerve » benign nevi (Expand Search), benign neck (Expand Search), benign beale (Expand Search)
nerve cases » nerve caused (Expand Search), nerve based (Expand Search), nerve changes (Expand Search)
bell nerve » cell nerve (Expand Search), wall nerve (Expand Search)
j letters » bj letters (Expand Search), _ letters (Expand Search), 5 letters (Expand Search)
cases doi » cases do (Expand Search), cases dos (Expand Search), cases done (Expand Search)
j benign » j benigno (Expand Search), _ benign (Expand Search), a benign (Expand Search)
case dti » case data (Expand Search), based dti (Expand Search), case due (Expand Search)
nerve a » nerve _ (Expand Search)
a dis » a dos (Expand Search), a des (Expand Search), a dia (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.

• If you are trying to use Boolean operators, they must be ALL CAPS: (( j letters nerve a dis ) OR ((( j bell nerve cases doi ) OR ( j benign nerve case dti ))))~.
• Adding a wildcard symbol may retrieve word variants: (( j letters nerve a dis ) or ((( j bell nerve cases doi ) or ( j benign nerve case dti ))))*.