Perhaps you should try some spelling variations:
"supply grid integration theories." » "supply grid integration theorems.", "supply grid integrationstheorie 2.", "supply grid integration theory.", "supply crowd integration theories.", "supply great integration theories.", "support grid integration theories."
"supply scale conservation efforts." » "supply scalar conservation efforts.", "supply secure conservation efforts.", "supply whales conservation efforts.", "supply case conservation efforts.", "supply scheme conservation efforts.", "supply social conservation efforts."

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

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