Perhaps you should try some spelling variations:
"survey first generation reforms." » "survey first generation records.", "survey first federation reform.", "survey first generation platforms.", "survey next generation reforms.", "survey heat generation reforms.", "survey bias generation reforms.", "survey cost generation reforms."
"supply crowd conservation efforts." » "supply from conservation efforts.", "supply good conservation efforts.", "supply wood conservation efforts.", "supply growth conservation efforts.", "supply cost conservation efforts."

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: (("survey first generation reforms.") OR ("supply crowd conservation efforts."))~.
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