Perhaps you should try some spelling variations:
"support grid integration theories." » "support grid integration theorems.", "support grid integrationstheorie 2.", "support grid integration theory.", "support agri integration theories.", "support group integration theories.", "support build 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.

• Performing a fuzzy search may retrieve terms with similar spellings: (("support grid integration theories.") or ("support grant integration efforts."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("support grid integration theories.") OR ("support grant integration efforts.")).
• Removing quotes may allow a broader search: (( support grid integration theories. ) or ( support grant integration efforts. )).
• Adding a wildcard symbol may retrieve word variants: (("support grid integration theories.") or ("support grant integration efforts."))*.