Perhaps you should try some spelling variations:
"supply gross emigration countries." » "supply gross immigration countries.", "supply gross destination countries.", "supply gross democratic countries.", "supply growth emigration countries.", "supply costs emigration countries.", "supply cost emigration countries."
"support from construction efforts." » "support from conservation efforts.", "support from construction errors.", "support from construction export.", "support from reconstruction efforts.", "support road construction efforts.", "support dam construction efforts."

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("supply gross emigration countries.") OR ("support from construction efforts."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"supply gross emigration countries.\") OR (\"support from construction efforts.\"))*".
• Removing quotes may allow a broader search: (( supply gross emigration countries. ) OR ( support from construction efforts. ))*.