Perhaps you should try some spelling variations:
"feudal property reduction" » "feudal poverty reduction", "feudal property education", "feudal properties reduction", "real property reduction", "thermal property reduction"
"rural poverty protection" » "rural poverty projection", "rural poverty projections", "rural poverty production"
"natural property protection" » "cultural property protection", "material property protection", "national property protection"
"feudal property prediction" » "real property prediction", "thermal property prediction"

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: (((("feudal property reduction") OR ("feudal property prediction"))) OR ((("rural poverty protection") OR ("natural property protection"))))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"feudal property reduction\") OR (\"feudal property prediction\"))) or (((\"rural poverty protection\") or (\"natural property protection\"))))*".
• Removing quotes may allow a broader search: (((( feudal property reduction ) OR ( feudal property prediction ))) or ((( rural poverty protection ) or ( natural property protection ))))*.