Perhaps you should try some spelling variations:
"import duty integration process." » "import duty reintegration process.", "import duty migration process.", "import duty innovation process.", "import data integration process.", "import south integration process.", "import deep integration process.", "import duties integration process."
"supply grid conservation efforts." » "supply aid conservation efforts.", "supply good conservation efforts.", "supply soil conservation efforts.", "supply crowd conservation efforts.", "support grid 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: (("supply grid conservation efforts.") OR ("import duty integration process."))~.
• Removing quotes may allow a broader search: (( supply grid conservation efforts. ) or ( import duty integration process. ))~.
• Adding a wildcard symbol may retrieve word variants: (("supply grid conservation efforts.") or ("import duty integration process."))*.