Perhaps you should try some spelling variations:
letter nervous » center nervous (Expand Search), lobster nervous (Expand Search), other nervous (Expand Search)
bent service » tent service (Expand Search), best service (Expand Search), ent service (Expand Search)
service case » services case (Expand Search), service cases (Expand Search), service care (Expand Search)
benign nevus » benign nevi (Expand Search), benign neck (Expand Search), benign nerve (Expand Search)
nervous 5 » nervous _ (Expand Search), nervous a (Expand Search)
j letter » bj letter (Expand Search), cj letter (Expand Search), j letters (Expand Search)
case dti » case data (Expand Search), based dti (Expand Search), case due (Expand Search)
j benign » j benigno (Expand Search), _ benign (Expand Search), a benign (Expand Search)
j bent » j benet (Expand Search), j bento (Expand Search), j bena (Expand Search)
5 dos » 5 does (Expand Search), 5 dogs (Expand Search), 5 dose (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 letter nervous 5 dos ) OR ((( j bent service case dti ) OR ( j benign nevus case dti ))))~.
• Adding a wildcard symbol may retrieve word variants: (( j letter nervous 5 dos ) or ((( j bent service case dti ) or ( j benign nevus case dti ))))*.