Perhaps you should try some spelling variations:
"import duty international journal." » "import duty international capital.", "import do international journal.", "import wto international journal.", "import fund international journal.", "import duties international journal."
"supply charges irrigation schemes." » "supply change irrigation schemes.", "supply large irrigation schemes.", "supply charges irrigation scheme.", "supply charges irrigation systems.", "supply chains irrigation schemes.", "supply curves irrigation schemes.", "supply shortages irrigation schemes."

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 charges irrigation schemes.") OR ("import duty international journal."))~.
• Removing quotes may allow a broader search: (( supply charges irrigation schemes. ) or ( import duty international journal. ))~.
• Adding a wildcard symbol may retrieve word variants: (("supply charges irrigation schemes.") or ("import duty international journal."))*.