Perhaps you should try some spelling variations:
"support china integrating countries." » "support china importing countries.", "support china immigration countries.", "support china integrating culture.", "support china integration countries.", "support china integrated countries.", "support count integrating countries.", "support china's integrating countries.", "report china integrating countries."
"support grid integration theories." » "support grid integration theory.", "support grid integration through.", "support grid integration efforts.", "support trade integration theories.", "support _ integration theories.", "support data integration theories.", "support agri integration theories.", "support grant integration theories.", "support group integration theories."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("support grid integration theories.") or ("support china integrating countries."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("support grid integration theories.") OR ("support china integrating countries.")).
• Removing quotes may allow a broader search: (( support grid integration theories. ) or ( support china integrating countries. )).
• Adding a wildcard symbol may retrieve word variants: (("support grid integration theories.") or ("support china integrating countries."))*.