Perhaps you should try some spelling variations:
"support von integration theories." » "support von integration theorems.", "support von integrationstheorie 2.", "support von integration theory.", "support von interaktion theories.", "support can integration theories.", "support 1.2 integration theories.", "rapport von integration theories.", "support vs integration theories."
"supply weather information theory." » "supply further information theory.", "supply sector information theory.", "supply customer information theory.", "supply water information theory."

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 von integration theories.") OR ("supply weather information theory."))~.
• Removing quotes may allow a broader search: (( support von integration theories. ) or ( supply weather information theory. ))~.
• Adding a wildcard symbol may retrieve word variants: (("support von integration theories.") or ("supply weather information theory."))*.