Perhaps you should try some spelling variations:
"english forces / 18th century" » "english farces / 18th century"
"english farmer / 18th century" » "english farces / 18th century"
"english farce / 18th century" » "english farces / 18th century", "english france / 18th century", "english free / 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 farce / 18th century") OR ((("english forces / 18th century") OR ("english farmer / 18th century")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"english farce / 18th century\") or (((\"english forces / 18th century\") OR (\"english farmer / 18th century\"))))".
• Removing quotes may allow a broader search: (( english farce / 18th century ) or ((( english forces / 18th century ) OR ( english farmer / 18th century )))).
• Adding a wildcard symbol may retrieve word variants: (("english farce / 18th century") or ((("english forces / 18th century") OR ("english farmer / 18th century"))))*.