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 late / general"

You may be able to get more results by adjusting your search query.

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