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

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: (((("formal property reduction") OR ("real property reduction"))) OR ((("rural property protection") OR ("natural property protection")))).
• Removing quotes may allow a broader search: (((( formal property reduction ) or ( real property reduction ))) or ((( rural property protection ) or ( natural property protection )))).
• Adding a wildcard symbol may retrieve word variants: (((("formal property reduction") or ("real property reduction"))) or ((("rural property protection") or ("natural property protection"))))*.