Perhaps you should try some spelling variations:
"support die integration theories." » "support die integration theorems.", "support die integrationstheorie 2.", "support die integration theory.", "support trade integration theories.", "support de integration theories.", "support deep integration theories.", "support does integration theories."
"support grant integration efforts." » "support grant international efforts.", "support grant conservation efforts.", "support migrant integration efforts.", "support migrants integration efforts.", "support statt integration efforts."

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