Perhaps you should try some spelling variations:
"support eu integration theories." » "support eu integration theory.", "support eu integration through.", "support eu integration efforts.", "support _ integration theories.", "support deep integration theories.", "support data integration theories.", "support key integration theories.", "support a integration theories."
"support fare integrating policies." » "support fare international policies.", "support fare integrating countries.", "support fare immigration policies.", "support fare integration policies.", "support faso integrating policies.", "support market integrating policies.", "support falls integrating policies.", "support state integrating policies.", "support trade integrating policies."

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: (("support eu integration theories.") OR ("support fare integrating policies."))~.
• Removing quotes may allow a broader search: (( support eu integration theories. ) or ( support fare integrating policies. ))~.
• Adding a wildcard symbol may retrieve word variants: (("support eu integration theories.") or ("support fare integrating policies."))*.