Perhaps you should try some spelling variations:
"middle past culture" » "middle post culture", "middle plant culture", "middle yeast culture", "middle part culture", "middle phase culture", "middle east1 culture"
"middle last culture" » "middle plant culture", "middle yeast culture", "middle list cultures", "middle class culture", "middle late culture", "middle east's culture"
"middle east culture" » "middle yeast culture", "middle yeast cultures", "middle yeasts culture"

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