Perhaps you should try some spelling variations:
"support fare integration theories." » "support fare integration theory.", "support fare integration through.", "support fare integration efforts.", "support market integration theories.", "support trade integration theories.", "support data integration theories.", "support falls integration theories.", "support water integration theories."
"support state integration schemes." » "support state irrigation schemes.", "support state integration some.", "support system integration schemes.", "support state interactions schemes.", "support trade integration schemes.", "support staff integration schemes.", "support strategy integration schemes.", "support estimate integration schemes."

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