Perhaps you should try some spelling variations:
"english france / 18th century" » "english finance / 18th century", "english french / 18th century", "english dance / 18th century"
"english forces / 18th century" » "english farces / 18th century", "english farmer / 18th century"

Try widening your search to All Fields.

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: (("english france / 18th century") OR ("english forces / 18th century")).
• Removing quotes may allow a broader search: (( english france / 18th century ) or ( english forces / 18th century )).
• Adding a wildcard symbol may retrieve word variants: (("english france / 18th century") or ("english forces / 18th century"))*.