Perhaps you should try some spelling variations:
"support strategy interaction terms." » "support strategic interaction terms.", "support strategy integration terms.", "support strategic interactions terms.", "support strategy interaction term.", "supply strategy interaction terms."
"support fare integration theories." » "support fare integration theorems.", "support fare integrationstheorie 2.", "support fare integration theory.", "support trade integration theories.", "support die integration theories.", "support farm integration theories.", "support farmers integration theories.", "support future integration theories."

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