Perhaps you should try some spelling variations:
"import trade international series." » "import trade international reserves.", "import trade international studies.", "import trade international agencies.", "import care international series.", "import time international series.", "import private international series.", "export trade international series.", "import price international series.", "import taxes international series."
"supply china stemming services." » "supply china streaming services.", "supply china testing services.", "supply china selecting services.", "supply china standing services.", "supply china stein services.", "supply chains stemming services.", "supply chain stemming services."

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: (("import trade international series.") OR ("supply china stemming services."))~.
• Removing quotes may allow a broader search: (( import trade international series. ) or ( supply china stemming services. ))~.
• Adding a wildcard symbol may retrieve word variants: (("import trade international series.") or ("supply china stemming services."))*.