Perhaps you should try some spelling variations:
"middle part culture" » "middle apart culture", "middle art culture", "middle past culture", "middle earth culture", "middle path culture", "middle phase culture"
"middle late culture" » "middle plate culture", "middle lane culture", "middle palate culture", "middle state culture", "middle layer culture", "middle age culture"

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 part culture") OR ("middle late culture")).
• Removing quotes may allow a broader search: (( middle part culture ) or ( middle late culture )).
• Adding a wildcard symbol may retrieve word variants: (("middle part culture") or ("middle late culture"))*.