Perhaps you should try some spelling variations:
"support state interactions theories." » "support state interactions series.", "support state integration theories.", "support state interactions theory.", "support scale interactions theories.", "support state interventions theories.", "support sea interactions theories.", "support stage interactions theories.", "support staff interactions theories.", "support start interactions theories."
"support fare integration schemes." » "support fare integration schengen.", "support fare irrigation schemes.", "support fare integration regimes.", "support trade integration schemes.", "support die integration schemes.", "support farm integration schemes.", "support farmers integration schemes.", "support future integration schemes."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("support state interactions theories.") OR ("support fare integration schemes."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"support state interactions theories.\") OR (\"support fare integration schemes.\"))".
• Removing quotes may allow a broader search: (( support state interactions theories. ) OR ( support fare integration schemes. )).
• Adding a wildcard symbol may retrieve word variants: (("support state interactions theories.") OR ("support fare integration schemes."))*.