Perhaps you should try some spelling variations:
"down teacher supply" » "down teacher support", "down teachers support", "down teachers supply", "donn teacher supply", "brown teacher supply"
"down neither supply" » "down further supply", "down better supply", "down belcher supply", "down weather supply", "down northern supply", "can neither supply"
"down teacher survey" » "down teachers survey", "donn teacher survey", "brown teacher survey"

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: (((("down teacher supply") OR ("down teacher survey"))) OR ("down neither supply"))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"down teacher supply\") OR (\"down teacher survey\"))) or (\"down neither supply\"))*".
• Removing quotes may allow a broader search: (((( down teacher supply ) OR ( down teacher survey ))) or ( down neither supply ))*.