Perhaps you should try some spelling variations:
"support estimate interaction term." » "support time interaction term.", "support climate interactions term.", "support private interaction term.", "support climate interaction term.", "support state interaction term.", "supports climate interaction term.", "support estimate interaction _."
"support eu integration regimes." » "support eu immigration regimes.", "support eu international regimes.", "support eu integration regional.", "support deep integration regimes.", "support die integration regimes.", "support data integration regimes.", "support _ integration regimes.", "support a integration regimes.", "support 4 integration regimes."

Try widening your search to All Fields.

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

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