Perhaps you should try some spelling variations:
"supply anti immigration policies." » "supply anti immigration policy.", "supply anti migration policy.", "supply net immigration policies.", "supply _ immigration policies.", "supply mass immigration policies.", "supply ann immigration policies."
"support actor interaction terms." » "support matter interaction terms.", "support matter interactions terms.", "support fiction interaction terms.", "support actor interaction term.", "support vector interaction terms.", "support action interaction terms.", "support act interaction terms."

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 anti immigration policies.") OR ("support actor interaction terms."))~.
• Removing quotes may allow a broader search: (( supply anti immigration policies. ) or ( support actor interaction terms. ))~.
• Adding a wildcard symbol may retrieve word variants: (("supply anti immigration policies.") or ("support actor interaction terms."))*.