Perhaps you should try some spelling variations:
"history / middle fast / general" » "history / middle east / general", "history / middle east1 / general", "history / middle fault / general"
"history / middle last / general" » "history / middle east / general", "history / middle class / general", "history / middle east's / general"
"history / middle late / general" » "history / middle state / general", "history / middle layer / general", "history / middle age / general"

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: (("history / middle fast / general") OR ((("history / middle last / general") OR ("history / middle late / general")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"history / middle fast / general\") or (((\"history / middle last / general\") OR (\"history / middle late / general\"))))".
• Removing quotes may allow a broader search: (( history / middle fast / general ) or ((( history / middle last / general ) OR ( history / middle late / general )))).
• Adding a wildcard symbol may retrieve word variants: (("history / middle fast / general") or ((("history / middle last / general") OR ("history / middle late / general"))))*.