Perhaps you should try some spelling variations:
"rural poverty protection" » "rural poverty projection", "rural poverty projections", "rural poverty production"
"natural property protection" » "cultural property protection", "material property protection", "national 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: (("rural poverty reduction") OR ((("rural poverty protection") OR ("natural property protection"))))*.
• Removing quotes may allow a broader search: (( rural poverty reduction ) or ((( rural poverty protection ) or ( natural property protection ))))*.